SqlDataAdapter Binding Empty Data
Mar 31, 2004
I have a block of code that does a Fill() with a DataAdapter, which seems to throw an exception if no values are returned. Then, when I try to bind the DataSet that gets filled, an error occurs, it doesn't even try to bind the column headers or anything.
This process seems to work fine when some rows are found, but it is not always guaranteed that the row count will always be > 0. The nice thing about using the Fill() function, is that it creates all my column headers automatically, so I was just wondering if there's a way to do a Fill() then a subsequent DataBind() to a DataGrid which would automatically format the columns even when no rows are found?
Here's a bit of the source.. if the last line finds no rows, it throws an exception ( I assume this is normal):
strSQL = "SELECT * FROM Prods";
cm.CommandText = strSQL;
da = new SqlDataAdapter( cm );
da.Fill(shelf);
Anyone got any ideas on how to fix this problem?
Brent
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Feb 20, 2008
I've a management module (managing Products) currently being displayed on the aspx page using ObjectDataSource and GridView control.The datasource is taken from a class residing in my Data Access layer with custom methods such as getProducts() and deleteProduct(int productID)I'm currently using SqlDataAdapter as well as Datasets to manipulate the data and have no big problems so far.However, my issue is this, each time i delete a product using the deleteProduct method, I would need to refill the dataset to fill the dataset before i can proceed to delete the product. But since I already filled the dataset using the getProducts() method, is it possible to just use that dataset again so that I dont have to make it refill again? I need to know this cos my data might be alot in the future and refilling the dataset might slow down the performance. 1 public int deleteCompany(Object companyId)
2 {
3 SqlCommand deleteCommand = new SqlCommand("DELETE FROM pg_Company WHERE CompanyId = @companyId", getSqlConnection());
4
5 SqlParameter p1 = new SqlParameter("@companyId", SqlDbType.UniqueIdentifier);
6 p1.Value = (Guid)companyId;
7 p1.Direction = ParameterDirection.Input;
8
9 deleteCommand.Parameters.Add(p1);
10 dataAdapter.DeleteCommand = deleteCommand;
11
12 companyDS = getCompanies(); // <--- I need to refill this before I can delete, I would be iterating an empty ds.
13
14 try
15 {
16 foreach (DataRow row in companyDS.Tables["pg_Company"].Select(@"companyId = '" + companyId + "'"))
17 {
18 row.Delete();
19 }
20 return dataAdapter.Update(companyDS.Tables["pg_Company"]);
21 }
22 catch
23 {
24 return 0;
25 }
26 finally { }
27 }
I thank you in advance for any help here.
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Mar 7, 2007
I thought I'd post this quick problem and answer, as I couldn't find the answer when searching for it.
I tried to call a stored procedure on SQL Server 2000 using the System.Data.SqlClient objects, and was not expecting any unusual issues. However when I came to call the Fill method I received the error "Arithmetic overflow error converting expression to data type int."
My first checks were the obvious ones of verifying that I'd provided all the correct datatypes and had no unexpected null values, but I found nothing out of order. The problem turns out to be a difference on the maximum values for integers between C# and SQL Server 2000. Previously having hit issues with SQL Server integers requiring Long Integer types in VB6, I was aware that these are 32-bit integers, so I was passing in Int32 variables. The problem was that Int32.MaxValue is not a valid integer for SQL Server. Seeing as I was providing an abitrary upper value for records-per-page (to fetch all in one page), I was simply able to change this to Int16.MaxValue and will hit no further problems as this is also well beyond any expected range for this parameter.
If anyone can name off the top of their heads what value should be provided as a maximum integer for SQL Server 2000, this might be a useful addition, but otherwise I hope this spares others some hunting if they also experience this problem.
James Burton
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Jun 3, 2008
Hi guys, I am about to bind my websites user inputted values into my database. I intend to use sql for this. THe site is very basic, dropdownlists and textboxes. The user is required to choose values and write in questions. Now these inputs ought to be stored somewhere right??, so for that i am using sql. Now i know sql, but how do I store data from a website and all, I have no clue, someone give me basic steps on how to go about doing this pleaseeeeee!!!
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Apr 15, 2007
I want to bind some data to a text box from sql server db. but when i run the page i get an error. here is my code.
<form id="form1" runat="server">
<div>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:imacsConn %>"
SelectCommand="SELECT Reportnumber FROM [SummaryBlue] WHERE REPORTNUMBER = @REPORTNUMBER">
<SelectParameters>
<asp:QueryStringParameter Name="REPORTNUMBER" QueryStringField="REPORTNo" Type="String" />
</SelectParameters>
</asp:SqlDataSource>
<asp:TextBox ID="TextBox1" runat="server" Columns="<%$ ConnectionStrings:imacsConn %>"></asp:TextBox></div>
</form>
Error:
Exception Details: System.FormatException: Input string was not in a correct format.Source Error:
Line 25: </SelectParameters>
Line 26: </asp:SqlDataSource>
Line 27: <asp:TextBox ID="TextBox1" runat="server" Columns="<%$ ConnectionStrings:imacsConn %>"></asp:TextBox></div>
Line 28: </form>
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May 17, 2007
Hi i'm a new to ASP.NET and for some reason when i click the Next button in the code below, the pageIndex does not change. Please assist, Basically what i'm trying to do is to use DataAdapter.fill but passing in the start index and the number of records to pull from the dataset table.
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
public partial class Home : System.Web.UI.Page
{
//ConnectionOleDbConnection dbConn;
//discount that can be change by user using a gui interface
//CurrentPageint pageIndex = 0;double discount = 0.15 ;
protected void Page_Load(object sender, EventArgs e)
{
// homeGridView.Visible = true;
BindList();
}protected string getSpecial(string price,object sale)
{String special = "";if (sale.ToString().CompareTo("True") == 0)
{special = String.Format("{0:C}",double.Parse(price) * (1-discount));
}return special;
}
protected void BindList()
{
//Creating an object for the 'PagedDataSource' for holding the data.
//PagedDataSource objPage = new PagedDataSource();
try
{
//open connection
openConnection();
//sql commandstring columns = "*";
string SqlCommand = "Select " + columns + " from Books";
//create adapters and DataSetOleDbDataAdapter myAdapter = new OleDbDataAdapter(SqlCommand, dbConn);DataSet ds = new DataSet("bSet");
//create tableDataTable dt = new DataTable("Books");myAdapter.Fill(ds, pageIndex, 9, "Books");
Response.Write("Page Index: "+pageIndex);
//create table data viewDataView dv = new DataView(ds.Tables["bTable"]);
booksDataList.DataSource = ds;
booksDataList.DataBind();
myAdapter.Dispose();
dbConn.Close();
}catch (Exception ex)
{
Response.Write("Exception thrown in BindList()");
dbConn.Close();throw ex;
}
}
public void openConnection()
{string provider="Microsoft.Jet.OLEDB.4.0";
string dataSource = "C:/Documents and Settings/Owner/My Documents/Visual Studio 2005/WebSites/E-BookOnline/App_Data/BooksDB.mdb";dbConn = new OleDbConnection("Provider =" + provider + ";" + "Data Source =" + dataSource);
dbConn.Open();
}protected void nextClick(object sender, EventArgs e)
{
pageIndex=pageIndex+1;Response.Write("In nextClick"+pageIndex);
BindList();
}protected void prevClick(object sender, EventArgs e)
{if (pageIndex > 0)
{
pageIndex=pageIndex-1;
BindList();
}
}
}
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May 26, 2006
Hi All
I am new to VS 2005 and ASP.NET. I used to use Dreamweaver to design but now I am trying VS.
What I want to do is to display data retrieved with a SqlDataSource in a web page. I know how to do it by binding it to the various controls (Grid, DataList, DetailsView, FormView, Repeater.) available but how can I display it without using any of the mentioned (Grid, DataList, DetailsView, FormView, Repeater)?
Any help apprecited.
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Jun 30, 2007
hi,i have a DB that contains some tables.so i have a radio button group of tow radio button to display a field.now how can i bind this radio button group to this field for updating and insert a new record?for more explain i brought a little of code below: in .aspx page i have: <asp:RadioButton ID="admin" runat="server" Checked="True" GroupName="membertype"
Text="admin" OnCheckedChanged="admin_CheckedChanged" /><br />
<asp:RadioButton ID="member" runat="server" GroupName="membertype" Text="member" /> -------------------------------------------------------------------------- <asp:ControlParameter ControlID="membertype" Name="isadmin" Type="string" PropertyName="text" />-------------------------------------------------------------------------- UpdateCommand="UPDATE UserManagement SET UserName = @UserName, Password = @Password, FullName = @FullName, Description = @Description, UserID = @UserID ,isadmin=@isadmin,usercitycode=@location WHERE (UserID = @Original_UserID)" note that the type of the "isadmin" field is "nvarchar(50)"thanks,M.H.H
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Jun 5, 2007
Hi there,
I'm trying to set an int type attribute to 0 for its Default Value, but it keeps reverting to ((0)). What is causing this?
Every int type attribute on that table does the same. There is one bit type attribute and a bunch of other type of attributes, but non of them are giving me a problem. The table is a copy from another database and I did check all the constraints and properties to make sure they're the same.
Thank you,
--Alex
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Dec 14, 2007
Hi All,
I have written a Query and Stored Procedure in SQL 2000 which fetched around 15 Lac data. It takes around 17 seconds to fetch the data in the Query Analyzer. But when i am using the Query/Stored Procedure in the report and I have deployed it in the server. When i am accessing the report in the application it taking around 2-3 minutes to bind the data.
What might be the issue? My tables in the database has been normalized.
Please help me to sort out this problem.
Regards
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Dec 10, 2007
Hi,
Referring to the book "Data Mining with SQL Server 2005" written by ZhaoHui Tang, I created a Mining Structure and a Mining Model with the AMO API after creating Database and Data Access Objects(referred to code lists from 14-1 to 14-6). I added Nested Table by creating a table column and added a key column to the nested table, while the error showed that in my structure the column of the nested table didn't include effective data bindings when processing.
Thanks for any suggestion!
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Mar 6, 2007
Hi there everyone. I have a stored procedure called “PagingTable� that I use for performing searches and specifying how many results to show per ‘page’ and which page I want to see. This allows me to do my paging on the server-side (the database tier) and only the results that actually get shown on the webpage fly across from my database server to my web server. The code might look something like this:
strSQL = "EXECUTE PagingTable " & _
"@ItemsPerPage = 10, " & _
"@CurrentPage = " & CStr(intCurrentPage) & ", " & _
"@TableName = 'Products', " & _
"@UniqueColumn = 'ItemNumber', " & _
"@Columns = 'ItemNumber, Description, ListPrice, QtyOnHand', " & _
"@WhereClause = '" & strSQLWhere & "'"
The problem is the stored procedure actually returns two result sets. The first result set contains information regarding the total number of results founds, the number of pages and the current page. The second result set contains the data to be shown (the columns specified). In ‘classic’ ASP I did this like this.
'Open the recordset
rsItems.Open strSQL, conn, 0, 1
'Get the values required for drawing the paging table
intCurrentPage = rsItems.Fields("CurrentPage").Value
intTotalPages = rsItems.Fields("TotalPages").Value
intTotalRows = rsItems.Fields("TotalRows").Value
'Advance to the next recordset
Set rsItems = rsItems.NextRecordset
I am trying to do this now in ASP.NET 2.0 using the datasource control and the repeater control. Any idea how I can accomplish two things:
A) Bind the repeater control to the second resultset
B) Build a “pager� of some sort using the values from the first resultset
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Apr 1, 2015
when i do a snapshot i have it set up to truncate before inserting. As a result I'm getting an error saying that it cant truncate a table reference in an indexed view. What settings should i use to allow for a snapshot in this instance? Should i manually drop the databinding then snap then recreate the databinding? there has to be a better way
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Nov 11, 2014
I have 2 tables in my database.
one is Race table and 2nd one is Age Range.
I want to write a query where I can see all races and age range as column.
TblRace
ID, RaceName
TblAgeRange
ID,AgeRange.
There is no connection between this two table. I need to display result like below.
Race 17-20 21-30 31-40
A
B
I
W
How do i get this kind of empty data set so that I can fill it out in front end or any better solution. The age range will be displayed as many row as they have. It's not static. Above is just an example.
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Apr 18, 2006
I have a dataset that sometimes is empty. I have it as a detail row in a table on the report, but since the dataset is null the row does not appear. What I would like to do is have it say "No results" if there are no results, otherwise have it show the results.
I tried to add a textbox and reference the textbox on the table, but it was a no go.
Here is what I had in my textbox
<code>
=code.noRows(ReportItems!table8!textbox30)
</code>
and this is what I was using in the code
<code>
Function noRows(byVal result) as string
if result = "" then
noRows = "NO Results"
else
noRows = result
end if
end function
</code>
Can anyone assist me with how to do this?
Thanks
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May 6, 2015
I would like to empty out my 2k8 database (remove all the data in the tables only) And reloaded it with the data from production (2k5). I know I would have to dis-enable any constraints, triggers and remove all indexes before I can run a Truncate/Delete on all tables correct And then import the data via Wizard or script And lastly enable all the constraints & triggers, rebuild the indexes. Is this the only way to go about this? I don't want to do a backup & restore because the 2k5 doesn't have a 20% of the tables that are in 2k8. The 20% of those tables in 2k8 i'm not going to remove.
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Mar 21, 2008
Hi i wanna delete all the records from an large database 200 -300 tables, because i want make some changes an start from scratch,but keep the structures of the database key , index etc, i tried to generate script but when i run to many errors , plz help 10x
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Feb 22, 2006
Hi,
I am trying to do a lookup for a value in a codes table and if that code is not there; add it to the table, my problem is if the lookup table is blank no records to begin with it will not add any data, that means the data source is empty so there no data going thru the data pipeline. So how do I get data in the table if we start with an empty table? If I am not clear I can explain it more.
Thank
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May 8, 2007
Hello everybody,
I have a matric that looks like this :
SALES RETURNS
Client1 100 50
Client2 40 0
But when there is no returns in the month, the column returns isn't displayed. So I get this:
SALES
Client1 100
Client2 40
How can I show this column even with empty data?
Thanks in advance for your help.
Zoz
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Mar 1, 2004
Hi Everyone,
I am using a DTS package where one of the inputs is an Excel Sheet. Actually this sheet is updated manually whenever required i.e once a week or sometimes once a month, but the DTS package runs everyday.
Whenever new rows are added or deleted manually in the excel sheet, empty rows are showed in the sheet after the last row of data. This hinders the DTS package, because the destination table to which the data in the Excel sheet is sent has Primary keys in it.
Can anyone suggest me how to avoid getting the empty spaces in the excel sheet.
Thanks in advance.
Regards,
kalyan
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Jul 11, 2007
Hi,
I'm new to VS2005 (vb.net) and here my situation
I have form with a dataset1 (tbl1, tbl2, tbl3, tbl4) pulling data from a Access db. and showing it on the form1(databound)
I need to write what is on form1 to the empty dataset2 in SQL 2005 db
I have created a new DB in SQL 2005 with a Table SQL1 which has the same fields as on form1. Please can some one show me how do I do this. Please
Thanks in advance for your response.
-NM
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Feb 13, 2008
Hello,
I have a problem where I need to include data from a table where one of the joined columns can contain empty strings. The emptry string column and its related columns need to be included in the results of the query.
The Join looks like this:
SalesData.dbo.tbl_CYProcessedSales ps
INNER JOIN SalesData.dbo.vw_Product_CYProcessedSalesXref xr
ON ps.Prod = xr.Prod
AND ps.Acct = xr.AcctCode
INNER JOIN TxnRptg.dbo.vw_NetNewRevenueUnion nn
ON xr.BillingType = nn.BillingType
AND xr.ProdGroup = nn.Product
AND xr.AcctCode = nn.AcctCode
The problem occurs on the xr.BillingType = nn.BillingType portion of the join. the nn.BillingType can contain empty strings. I've tried a LEFT join to vw_NetNewRevenueUnion, but this has not worked.
In vw_NetNewRevenueUnion, BillingType becomes an empty string within a CASE statement if BillingType is NULL. I've thought about using something like 'All' in the ELSE condition, and doing the same in the vw_Product_CYProcessedSales view just so I don't have to deal with an empty string.
If I were not to do that, is there some way I can handle the empty string issue within the join so that empty string records will be included in the query results?
Thank you for your help!
cdun2
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Dec 5, 2006
On my office PC I have a strange problem with Data Flow Tasks. When I check-in a package into Source Control (Team Foundation) I usually have some empty Data Flow Tasks in the packages...even if I haven't changed that Flow Task.
This is really frustrating cause when running the package all goes well, but after a whil you notice that some tables are empty.
Does anyone know what the problem is?
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Sep 30, 2007
hi
it looks like my thread has been deleted but I keep on asking.
When trying to connect to a table i a SQL2005 database in a vb.Net webapplication I get the following error message from the wizard:
"The wizard detected the following errors when configuring the data adapter "SqlDataAdapter1".
"Check" Generated SELECT Statement
"Check" Generated Mappings
"Warning" Generated INSERT Statement
There were errors configuring the data adapter
"Warning" Generated UPDATE Statement
There were errors configuring the data adapter
"Warning" Generated DELETE Statement
There were errors configuring the data adapter"
The same connection works fine in a vb6 application. I have seen other threads concerning this in this forum but I can't find any answers. Any ideas anyone?
ciao chris
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Apr 17, 2007
I am making a form that takes input for 1 to 5 students using VWD. With the help of previous posts I have been able to make the database insert query work properly. In my form I have a radio list that has the user select if they are entering information for 1, 2, 3,4, or 5 children. Depending on how many children are selected on the radio list, I am displaying the proper number of textboxes and validating the data using the handy RequiredFieldValidator. Now I am at the point where I want to perform the instert to the database depending on the selected number of children in the family. What is the general rule for best practices. Please keep in mind that it is my understanding that ALL fileds in a SQL insert statment must have data. Should I ...1) create alternative SQL statements depending on the textboxes displayed OR2) is it more common to insert a standard string or integer, depending on the datatype, into the unused textboxes to populate the unused fields? Sincerely,Mike
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Nov 20, 2007
I've built a simple VS2005 ASP.Net web app that uses Crystal Reports for generating assorted reports. More specifically, when a report is called it executes the correct SQL Server Stored Procedure and returns a Data Table populated with with appropriate data. In my testing, everything seemed to be working fine.But I just did a test where I pressed the "Submit" button on two different client browsers at almost the same time. Without fail, one browser returns the report as it should but the other one returns an empty report; all of the Crystal Reports template info is there but the report is just empty of data. Considering that each browser is running in its own session, I'm confused about why this is happening.One thing: I did login as the same user in both cases. Might this be causing the problem?Robert W.Vancouver, BC
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Feb 1, 2006
Hi, whenever the underlying query being called by EXEC in the followinghas an empty result set I get the following error -- Invalid Data for'Numeric' when EXEC returns empty row. However if I call the querywithout using REPLACE (which I'm forced to do, because openquery doesnot allow variables), I get just an empty result set. Whenever theunderlying query returns a non-empty result set, the code works withouterror (regardless of wether there are nulls in the numeric column).set @switch ='5707550'set @start_date = '01-JAN-2006'set @end_date = '27-JAN-2006'set @month = 1set @year = 2006set @sql_str='SELECT * FROM(select MSC_KEY,to_char(trunc(TSTAMP), ''yyyy-Mon-dd'') as "Timestamp",ROUND( NVL(SUM(SUNRGMMSCBHCP1.XASUTIL),0) / DECODE (NVL(SUM(SUNRGMMSCBHCP1.XASNXFR),0),0,NULL,NVL(SUM( SUNRGMMSCBHCP1.XASNXFR),0)), 5)as "PER_CPU_UTIL"FROM NOR_GSM_COMPOSITE_MSC1_BHCPP SUNRGMMSCBHCP1,mscs_view vWHERE SUNRGMMSCBHCP1.gsm_msc_key = v.msc_key and v.MSC_KEY in (' +@switch + ')and SUNRGMMSCBHCP1.TSTAMP between to_date(''' + @start_date + '00:00:00'', ''DD-MON-YYYY HH24:MI:SS'') andto_date(''' + @end_date + ' 23:59:00'', ''DD-MON-YYYYHH24:MI:SS'')group by MSC_KEY, trunc(tstamp))WHERE rownum < 10000'SET @sql_str = N'select * from OPENQUERY(VISION, ''' +REPLACE(@sql_str, '''', '''''') + ''')'EXEC (@sql_str);Is there anyway to prevent this error?Thanks,Crazy
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Sep 25, 2007
So I have an MDX query in an SSRS data set. Here is my MDX query:
Code SnippetSELECT { [Measures].[Gross Sales Amount USD], [Measures].[Net Sales Amount USD] } ON COLUMNS, { ([Promotion].[Media Property].[Promo Code Description].ALLMEMBERS) } DIMENSION PROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ON ROWS FROM ( SELECT ( STRTOMEMBER(@BeginDateConvert, CONSTRAINED) : STRTOMEMBER(@EndDateConvert, CONSTRAINED) ) ON COLUMNS FROM ( SELECT ( STRTOSET(@PromotionMediaProperty, CONSTRAINED) ) ON COLUMNS FROM ( SELECT ( { [Promotion].[Campaigns].[Campaign].&[Paid Partner] } ) ON COLUMNS FROM ( SELECT ( { [Products].[Product Line].[Line].&[Merchandise] } ) ON COLUMNS FROM ( SELECT ( { [BusinessUnit].[Business Unit].[Product Business Unit].&[40] } ) ON COLUMNS FROM [Net Sales]))))) WHERE ( [BusinessUnit].[Business Unit].[Product Business Unit].&[40], [Products].[Product Line].[Line].&[Merchandise], [Promotion].[Campaigns].[Campaign].&[Paid Partner] ) CELL PROPERTIES VALUE, BACK_COLOR, FORE_COLOR, FORMATTED_VALUE, FORMAT_STRING, FONT_NAME, FONT_SIZE, FONT_FLAGS
This query returns 4 fields. Media Property, Promo Code Description, Gross Sales, and Net Sales. For the given query the measures are empty or null. I do not want any data to show up when the measures are null so I put in NON EMPTY clauses before the COLUMNS and before the ROWS. So now my query looks like this: (I only added the NON EMPTY clauses)
Code Snippet
SELECT NON EMPTY { [Measures].[Gross Sales Amount USD], [Measures].[Net Sales Amount USD] } ON COLUMNS, NON EMPTY{ ([Promotion].[Media Property].[Promo Code Description].ALLMEMBERS) } DIMENSION PROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ON ROWS FROM ( SELECT ( STRTOMEMBER(@BeginDateConvert, CONSTRAINED) : STRTOMEMBER(@EndDateConvert, CONSTRAINED) ) ON COLUMNS FROM ( SELECT ( STRTOSET(@PromotionMediaProperty, CONSTRAINED) ) ON COLUMNS FROM ( SELECT ( { [Promotion].[Campaigns].[Campaign].&[Paid Partner] } ) ON COLUMNS FROM ( SELECT ( { [Products].[Product Line].[Line].&[Merchandise] } ) ON COLUMNS FROM ( SELECT ( { [BusinessUnit].[Business Unit].[Product Business Unit].&[40] } ) ON COLUMNS FROM [Net Sales]))))) WHERE ( [BusinessUnit].[Business Unit].[Product Business Unit].&[40], [Products].[Product Line].[Line].&[Merchandise], [Promotion].[Campaigns].[Campaign].&[Paid Partner] ) CELL PROPERTIES VALUE, BACK_COLOR, FORE_COLOR, FORMATTED_VALUE, FORMAT_STRING, FONT_NAME, FONT_SIZE, FONT_FLAGS
Adding the NON EMPTY returns nothing... not even field names. This is a problem because, I have a table in the report that looks at this data set and when there are no fields, the report can't run.
How can I still have NON EMPTY functionality and still show the fields? Is this a problem in SSRS?
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Aug 16, 2006
Hi guys. Does anybody have any clue about how to create a class which inherits from SqlDataAdapter? I tried but looks like SqlDataAdapter is not inheritable. I would like to extend it with some custom method such as a method which fills a Dataset (used with a DataGrid) with the only few records to display per page (say 20) against the thousand records it might instead contain otherwise.Any workarounds? Many thanks in advance for your help.
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Mar 26, 2007
Hi I am writing an app in flash which needs to hook up to MS SQL via asp.I need the code below to pass the var (ptodaysDate) to the sql statement. I can hard code it in and it works great but I really need to pass the var from flash.Pulling my hair out here, not much left to go.Any help greatly appreciated.---------------------------------------------- [WebMethod] public Schedule[] getSchedule(int ptodaysDate) { SqlDataAdapter adpt = new SqlDataAdapter("SELECT scheduleID, roomName, eventType,unitName,groupName,staffName,staffName2,theDate,theEnd FROM tb_schedule Where theDate >= @rtodaysDate", connString); SqlParameter rtodaysDate = new SqlParameter("@rtodaysDate", ptodaysDate); DataSet ds = new DataSet(); ArrayList al = new ArrayList(); adpt.Fill(ds); foreach (DataRow row in ds.Tables[0].Rows) { Schedule obj = new Schedule(); obj.scheduleID = (int)row["scheduleID"]; obj.roomName = (string)row["roomName"]; obj.eventType = (string)row["eventType"]; obj.unitName = (string)row["unitName"]; obj.groupName = (string)row["groupName"]; obj.staffName = (string)row["staffName"]; obj.staffName2 = (string)row["staffName2"]; obj.theDate = (string)row["theDate"]; obj.theEnd = (string)row["theEnd"]; al.Add(obj); } Schedule[] outArray = (Schedule[])al.ToArray(typeof(Schedule)); return outArray; } public class Schedule { public int scheduleID; public string roomName; public string eventType; public string unitName; public string groupName; public string staffName; public string staffName2; public string theDate; public string theEnd; }
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Apr 25, 2007
It's a pretty basic question but I haven't been able to find any examples out there. I dimmed a dataadapter and would like to reuse later in my code (line 3 in the code below). What is the correct syntax to do this? Dim da As New SqlDataAdapter("SELECT * FROM myTable", conn)da.Fill(myDataTable)da.______ ("SELECT * FROM myTable2", conn)da.Fill(myDataTable2)
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Aug 15, 2007
I'm working on a project to dynamically create PDFs with content from an SQL server. My current approach is to get the data I need into a DataSet using SqlDataAdapter, write the DataSet to a stream as XML, transform the XML into FO and then output a pdf using FOP. For some reason I get the following exception "System.NullReferenceException - Object reference not set to an instance of an object" when I try to set the SelectCommand property of my data adapter. Code for the project follows:Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim con As SqlConnection Dim cmd As SqlCommand Dim IDlist As String Dim keyidary As Array Dim query As String Dim tempxml As Stream query = "*****query is valid and very long, so it's not included here*****" IDlist = Request.Form("chosenIDs") keyidary = Split(IDlist, ",") Dim makequery As New StringBuilder(query) For Each ID As String In keyidary makequery.Append(" OR (KeyID = '" & ID & "')") Next query = makequery.ToString() 'Response.Write(query) When uncommented this prints the query just fine 'Response.End() Try con = New SqlConnection con.ConnectionString = "****Connection String is valid****" cmd = New SqlCommand cmd.CommandText = query cmd.CommandType = CommandType.Text cmd.Connection = con Dim adpt As SqlDataAdapter adpt.SelectCommand = cmd 'Response.Write(query) When these are above or between the previous 2 statements, query is printed, 'Response.End() otherwise I get the error described above. Dim profiles As New DataSet adpt.Fill(profiles) profiles.WriteXml(tempxml) Dim step1 As XslTransform = New XslTransform Dim step2 As XslTransform = New XslTransform step1.Load(Server.MapPath("TransAttmpt1.xslt")) step2.Load(Server.MapPath("formatXML.xsl")) Dim xml, pdf As String xml = "profiles.xml" pdf = "Profiles.pdf" Dim temp2xml As New XPathDocument(tempxml) Response.Write(query) Response.End() Dim midstream As Stream Dim finalxml As StreamWriter = New StreamWriter(xml) step1.Transform(temp2xml, Nothing, midstream, Nothing) Dim xpathdoc2 As XPathDocument = New XPathDocument(midstream) step2.Transform(xpathdoc2, Nothing, finalxml, Nothing) GeneratePDF(xml, pdf) 'There's a lot more but it doesn't seem relevant now.... I'm somewhat at a loss on how to proceed and any help is very greatly appreciated.Thanks!
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Oct 1, 2007
Hi all,
I have datatable having around 50 rows and 3 columns ID, Name and ExpVal, which is an expression columns,where the values can be any SQL functions Like REPLICATE(), SOUNDEX ( 'value' ) Or REVERSE ( 'value' ).....
i want to insert each row in that datatable like
INSERT INTO TAB1 ( ID, Name, ExpVal) VALUES (1, 'some name', SOUNDEX ( 'some name' ) )
so that the ExpVal will have value of the function ie inserted row look like
ID Name ExpVal1 some name S500 <--- Result of SOUNDEX ( 'some name' )
I'm using sqldatadapter to insert these values to the database
string sql = "INSERT INTO TAB1 (ID, Name, ExpVal)VALUES (@ID, @Name, @ExpVal) ";SqlDataAdapter sqlAdptr = new SqlDataAdapter();SqlCommand sqlCmd = new SqlCommand(sql, con);sqlCmd.parameters.Add("@ID", SqlDbType.Int, 0, "ID");sqlCmd.parameters.Add("@Name", SqlDbType.NVarChar, 200, "Name");sqlCmd.parameters.Add("@ExpVal", SqlDbType.VarChar, 100, "ExpVal");sqlAdptr.InsertCommand = sqlCmd;sqlAdptr.Update(dataTable);
This works fine, but the problem is, now the TAB1 contains
ID Name ExpVal1 some name 'SOUNDEX ( 'some name' )' instead of S500
Thatis the sql funtion is passed by SqlDataAdapter to database as a string and it is not executing while row is inserted to the table.Please provide what changes i have to make if i want SOUNDEX ( 'some name' ) to executed while data insertion take place
Thanks in advance
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