Error Trying To Add Information To DateTime Field Using Data Access Layer
Sep 20, 2006
I am taking my first stab at a 3 tier architecture within ASP.Net. I have been adding datasets and creating a new Insert to add certain parts to a table. I am trying to add a date field called 'DateAdded' and is setup in SQL as a DateTime. When Visual Studio auto created the dataset, the Insert function is not "DateAdded as Datetime" as I would have expected, but it is "DateAdded as System.Nullable(Of Date)". There is a space in between 'Of' and 'Date'. If I keep the space in there the insert function shows an error that says "Arguement not specified for parameter DateAdded of funtion( etc. etc.). If I take the space out, the error on the insert function goes away but there is an error within the "OfDate" that says "Array bound cannot appear in type specifiers". I am confused on why the date format changed and how I can get a date to go into the database using the autogenerated datasets from Visual Studio. Any help would be appreciated. Thanks, Mike
The query fails to execute and returns an error: String[1]: the Size property has an invalid size of 0. If I change the SqlDbType.Text parameter type to SqlDBType.Varchar, 100 (or any other fixed varchar length), it works but limits the length my unlimited field text. Any suggestions on how I can use db type text or varchar(max)? The field I need to retrieve is string characters of unlimited length and hence the datatype varchar(max).
I've been developing desktop client-server and web apps and have used Access and SQL Server Standard most of the time. I'm looking into using SQL CE, and had a few questions that I can't seem to get a clear picture on:
- The documentation for CE says that it supports 256 simultaneous connections and offers the Isolation levels, Transactions, Locking, etc with a 4GB DB. But most people say that CE is strictly a single-user DB and should not be used as a DB Server. Could CE be extended for use as a multi-user DB Server by creating a custom server such as a .NET Remoting Server hosted through a Windows Service (or any other custom host) on a machine whereby the CE DB would run in-process with this server on the machine which would then be accessed by multiple users from multiple machines?? Clients PCs -> Server PC hosting Remoting Service -> ADO.NET -> SQL CE
- and further more can we use Enterprise Services (Serviced Components) to connect to SQL CE and further extend this model to offer a pure high-quality DB Server? Clients PCs -> Server PC hosting Remoting Service -> Enterprise Services -> ADO.NET -> SQL CE
Seems quite doable to me, but I may be wrong..please let me know either ways
I've been following Soctt Mitchell's tutorials on Data Access and in Tutorial 1 (Step 5) he suggests using SQL Subqueries in TableAdapters in order to pick up extra information for display using a datasource. I have two tables for a gallery system I'm building. One called Photographs and one called MS_Photographs which has extra information about certain images. When reading the MS_Photograph data I also want to include a couple of fields from the related Photographs table. Rather than creating a table adapter just to pull this data I wanted to use the existing MS_Photographs adapter with a query such as...1 SELECT CAR_MAKE, CAR_MODEL, 2 (SELECT DATE_TAKEN 3 FROM PHOTOGRAPHS 4 WHERE (PHOTOGRAPH_ID = MS_PHOTOGRAPHS.PHOTOGRAPH_ID)) AS DATE_TAKEN, 5 (SELECT FORMAT 6 FROM PHOTOGRAPHS 7 WHERE (PHOTOGRAPH_ID = MS_PHOTOGRAPHS.PHOTOGRAPH_ID)) AS FORMAT, 8 (SELECT REFERENCE 9 FROM PHOTOGRAPHS 10 WHERE (PHOTOGRAPH_ID = MS_PHOTOGRAPHS.PHOTOGRAPH_ID)) AS REFERENCE, 11 DRIVER1, TEAM, GALLERY_ID, PHOTOGRAPH_ID 12 FROM MS_PHOTOGRAPHS 13 WHERE (GALLERY_ID = @GalleryID) This works but I wanted to know if there's a way to get all of the fields using one subquery instead of three? I did try it but it gave me errors for everything I could think of.Is using a subquery like above the best way when you want this many fields from a secondary table or should I be using another approach. I'm using classes for the BLL as well and wondered if there's a way to do it at this stage instead?
In my web application, i'm using 2 tabels; Users(Username(PK), Pwd, Name, Deptid(FK)) n Dept(Deptid(PK), Deptname)). For creating a Data Access Layer 4 my project, I added dataset as new item n followed the wizard 2 create the required functions. I have a function GetUser(@uname, @pwd), which takes username n password as input. M using this for authentication purpose. While executing it poping an ConstrainException. Plz help me out.
I've tried 2 as clear as possible here. OR u may ask me any other questions for clear picture of the scenario. Thanks and Regards, Sankar.
I request you plz tell how to create Data Access Layer. I mean DataAccess.dll. So that I can call stored procedure from dataaccess.dll as below. DataAccess.SqlHelper.ExecuteDataset(DataAccess.DSN.Connection("DBConnectionString"), CommandType.StoredProcedure, "SP_GetEmpIds"); I request you how can I add this stored procedures to DataAccess.dll and function. I am not having any idea in this area. I request you plz give me some suggestions to work with task.
HiI'm having problems following the tutorial on creating a data access layer - http://www.asp.net/learn/dataaccess/tutorial01cs.aspx?tabid=63 - when I try to compile in Visual Studio 2005 I get namespace could not be found. I followed exactly the tutorial - I created a dataset and added this code in my aspx page. <asp:GridView ID="GridView1" runat="server" CssClass="DataWebControlStyle"> <HeaderStyle CssClass="HeaderStyle" /> <AlternatingRowStyle CssClass="AlternatingRowStyle" />In my C# file I added these lines... using NorthwindTableAdapters; <<<<<this is the problem - where does this come from? protected void Page_Load(object sender, EventArgs e) { ProductsTableAdapter productsAdapter = new ProductsTableAdapter(); GridView1.DataSource = productsAdapter.GetProducts(); GridView1.DataBind(); }Thanks in advance
How do I get a System Table like 'Sysobjects' into the Data Access Layer? My app generates tables on the fly, and has to check in the sysobjects table which tables are present.
Hi Experts ! I want to use maximum feature of SQL Server 2005 and ASP.Net 2.0 in making Data Access LayerSuggestions will be welcomed .Thank you RegardsKAMRAN
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.
I am having a application in which from the front end i am saving details of three different things
i.Enquiry Details
ii.Parts Details
iii.Machine details
i am saving the Enquiry detail in a data table,Parts Details in a data table and machine detail in a data table and finally i am adding the three data tables into a single data set and passing the data set to data access layer there i have three insert command one for each data table in my case the enquiry data table will be saved first and then the next two details will be saved and i am saving the details in three different tables in the database, my problem is some times the enquiry details will save to the database and while saving the Parts details there may be some exception and i will throw an exception in that case the enquiry details will be saved and the remaining two details are not saved(Which are also part of the same Transaction).I wanted to know about how to call the transaction function in case of Data Access Layer.
objEntites.inTest = obj.inTest;-----------------------------------------------ERROR LINE
// objEntites.Add(obj);
}
return objEntites;
}
}
}
Error 2 foreach statement cannot operate on variables of type 'System.Data.IDataReader' because 'System.Data.IDataReader' does not contain a public definition for 'GetEnumerator' D:KOTI_PRJSEnterpriseCustomerClass1.cs 34 13 Customer
I am trying to drag data from Informix to Sql Server. When I kick off the package using an OLE DB Source and a SQL Server Destination, I get DT_DBDATE to DT_DBTIMESTAMP errors on two fields from Informix which are date data ....no timestamp part
I tried a couple of things:
Created a view of the Informix table where I cast the date fields as datetime year to fraction(5), which failed.
Altered the view to convert the date fields to char(10) with the hopes that SQL Server would implicitly cast them as datetime but it failed.
Till recently we were using the following code to retreive schema information of columns of tables
Dim schemaTable = connection.GetOleDbSchemaTable( _ System.Data.OleDb.OleDbSchemaGuid.Columns, _ New Object() {Nothing, Nothing, tableName, Nothing})
Now instead of getting the name of table (which i was using as param for filtering) i'm going to receive a sql-query. Now my question is if I were to get a query like the following :
I'm using DTS to import data from an Access memo field into a SQL Server ntext field. DTS is only importing the first 255 characters of the memo field and truncating the rest.I'd appreciate any insights into what may be causing this problem, and what I can do about it.Thanks in advance for any help!
Hi, I'm having trouble updating a DateTime field in my SQL database. Here is what I'm trying to do....I retrieve the existing value in the DateTime field (usually a bum date like 1/1/1900 00:00:00:00), then put it in a variable. Later, depending on some conditions, I'll either update the DateTime field to today's date (which works great) or set it back equal to the existing value from the variable (this one messes up and says "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM. "). There is a ton more than this but here are the relevant snippets:<code>Dim CompDate As DateTimeDim aComm As SQLCommand Dim aReader As SQLDataReader Dim bSQL,bConn As String bSQL= "SELECT CompleteDate,StatusOfMarkout FROM Tickets WHERE TicketName=" _ & CHR(39) & Trim(Ticket.Text) & CHR(39) bConn = serverStuff aConn = New SQLConnection(bConn) aComm = New SQLCommand(bSQL,aConn) aConn.Open() result = aComm.ExecuteReader() 'fills controls with data While result.Read() CompDate = result("CompleteDate") PreviousMarkoutStatus.Text = result("StatusOfMarkout") End While result.Close() aConn.Close()sSqlCmd ="Update OneCallTickets CompleteDate=@CompleteDate, StatusOfMarkout=@StatusOfMarkout WHERE TicketFileName=@TicketFileName" dim SqlCon as New SqlConnection(serverStuff) dim SqlCmd as new SqlCommand(sSqlCmd, SqlCon) If Flag1List.SelectedItem.Value = "No Change" Then SqlCmd.Parameters.Add(new SqlParameter("@Flag1", SqlDbType.NVarChar,35)) SqlCmd.Parameters("@Flag1").Value = PreviousMarkoutStatus.Text SqlCmd.Parameters.Add(new SqlParameter("@CompleteDate", SqlDbType.DateTime, 8)) SqlCmd.Parameters("@CompleteDate").Value = CompDateElse SqlCmd.Parameters.Add(new SqlParameter("@Flag1", SqlDbType.NVarChar,35)) SqlCmd.Parameters("@Flag1").Value = CurrentStatus.Text SqlCmd.Parameters.Add(new SqlParameter("@CompleteDate", SqlDbType.DateTime, 8)) SqlCmd.Parameters("@CompleteDate").Value = Today()End IfSqlCon.Open() SqlCmd.ExecuteNonQuery() SqlCon.Close()</code>Can anybody help me with this? Thanks a bunch
update tblPact_2008_0307 set student_dob = '30/01/1996' where student_rcnumber = 1830when entering update date in format such as ddmmyyyyi know the sql query date format entered should be in mmddyyyy formatis there any way to change the date format entered to ddmmyyyy in sql query?
I am using SQL Server Management Studio Express for creating my database. I also use the GUI tools for data entry instead of using T-SQL. Whenever I try to enter a value in a field that has a smalldatetime data type, it gives me an error message - "Invalid Value for cell (row 1, column 2).
The changed value in this cell was not recognised as valid. .Net Framework Datatype: Datetime Error Message: Index was outside the bounds of the array. Type a value appropriate for this data type or press ESC to cancel the change."
Now I have tried entering all different combinations in which one can enter a date or a time or both, including in the format I have specified in the windows regional settings, but I always get the same error message.
My other thread containg this same topic seems to have some error. It doesn't show up in the main 'SQL Server Database Engine' group at all. So I had to start a new thread instead.
Here's the link to the original - http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1136124&SiteID=1
Here are the contents of the same -
Post#1
Orginally posted by me -
Hi,
I am using SQL Server Management Studio Express for creating my database. I also use the GUI tools for data entry instead of using T-SQL. Whenever I try to enter a value in a field that has a smalldatetime data type, it gives me an error message - "Invalid Value for cell (row 1, column 2).
The changed value in this cell was not recognised as valid. .Net Framework Datatype: Datetime Error Message: Index was outside the bounds of the array. Type a value appropriate for this data type or press ESC to cancel the change."
Now I have tried entering all different combinations in which one can enter a date or a time or both, including in the format I have specified in the windows regional settings, but I always get the same error message.
How do I input data into the field?
Post#2
Originally posted by Jens K. Suessmeyer -
Hi,
you are using a format SQL Serve ri snot expecting. Which User language did you configured for the accessing user and which date are you trying to insert ? HTH, Jens K. Suessmeyer.
--- http://www.sqlserver2005.de ---
Post#3
Originally posted by me -
Hi,
I use only English as the default language for all programs, OS included. The date in question is not just one particular date, it is any date or time value, and I've been facing this issue ever since I started using SQL Server Express a year ago. Only I haven't used it much since, and need to seriously develop something now, that I bothered to ask the question here.
Some examples of the values I tried entering yesterday, and none of them worked. (I got the same error message for each value) -
1-1-2007
01-01-2007
01/01/2007
01,01,2007
01:01:2007
Jan 01, 2007 (this is the format I have specified for short date in the Win regional settings - MMM dd, yyyy)
I even tried entering time alongside with all those above figures in the format -
11:35 PM
11:35 AM
23:35
The only time value(s) I didn't try was/were - hh:mms tt - which is the time format specified in my Win regional settings, neither standalone, nor with the date values.
I also tried entering a time value standalone, without the date. Still no go.
(Also, as I have gleaned from previous posts, if all goes well and SQL Server accepts your data, then if you enter just a date value in a datetime field, then the field automatically gets populated with the value of the system time at that moment, and if you enter just a standalone time value, then the date part will be filled by the system date value on the date of the entry. Am I correct so far?)
Now I'm in a real fix because of the inability to enter date/time values.
Could you please help me out?
Post#6
Originally posted by me -
I don't understand. I can enter the datetime values in all the above mentioned combinations if I use an Insert or Update statement using T-SQL, but I can't seem to enter data in the datetime/smalldatetime fields at all if I try to use the GUI of Management Studio Express to enter data. (right click the table, select show table, and the grid view pops up). Ditto for using GUI tools of Visual Studio Express. Is this a bug in the Visual Studio (Express) software?
Also, my other concerns are, once I develop a front-end for data entry using VB, will I face the same issues with data entry in the datetime fields using the GUI of the front end? I can't test that right now, because I'm still learning VB, and cannot create the front end just yet.
Post#7
Originally posted by me this afternoon, but it never showed up on the page -
Alright, I have done a complete reinstall of Win XP, and have also reinstalled SQL Server Express. Prior to this, I had SQLExpress SP1, but now I have directly installed SP2.
Now I continue to face the same issue. SQL Server will not accept any value for any datetime field, unless it is entered as an SQL insert statement. It won't accept the value entered in the exact same format as the insert statement from the GUI mode of Management Studio Express, nor will it take any values from any GUI developed using VBExpress and the fill dataset method. It throws an error everytime. I don't know any other way of databinding and updating/inserting using VB at this time.
I am at my wits' end because of this. I ask again, is this a bug in SQL Server Express? If so how do I report it to MS and get my issue resolved? If not, even then how can I solve this problem?
Could someone please help me out? I am stuck and cannot use the product at all, without the datetime field.
Using Server Explorer in VB 2005, I am manually entering data in a table in a SQL Server 2005 Express database that includes a DateTime field. I have tried every conceivable format, but no matter what I try get one of these 2 errors:
1. String was not recognized as valid DateTime
2. Operand type class; text incompatible with DateTime
I have Googled this to death, but no example which involves trying to enter the data manually, say from Server Explorer.
Formats tried include all datetime formats (mmddyy, yymmdd, using dashes or slashes, enclosing in single quotes or pound signs).
I would appreciate if someone could please give me an example that I can literally insert without error.
I have an Excel spreadsheet that contains 100,000 + rows of data. Two of the columns in the spreadsheet are date fields that are sent over in the yyyymmdd format (no separators such as "-" or "/"). I tried converting these fields into dates using the Data Conversion task in SSIS. This doesn't work as it appears that SSIS cannot map a string in the format of yyyymmdd to a valid date. In lieu of this, I have added a Script Component to my transformation which can take the string and convert it to a date value using some Substring() calls on the source yyyymmdd string.
A few questions for the group ...
1. Is this there a more efficient or "better" way of performing this transformation?
2. I can also use OLE DB Command task in my transformation and make a call that might do something like this: select convert(datetime, convert(varchar(10), [@yyyymmddValue])) but how would this perform related to the Script Component task? My guess is that this would be slower since the transformation would make a database call for every record.
3. Are there any plans for the SQL team to make these types of conversions easier to implement in the future? It seems to me that this is a pretty common scenario for integrating date data.
I'am doing functionality test on DTS packages and saving my DTS packages to meta data services instead of saving them as local packages. We would like to see what information would be provided by saving them this way, but when we try to open the meta data browser (the 3rd icon under DTS) we get the following error:
An error occurred while trying to access the database information. The msdb database could not be opened.
I am trying to set up a data flow task. The source is "SQL Command" which is a stored procedure. The proc has a few temp tables that it outputs the final resultset from. When I hit preview in the ole db source editor, I see the right output. When I select the "Columns" tab on the right, the "Available External Column List" is empty. Why don't the column names appear? What is the work around to get the column mappings to work b/w source and destination in this scenario.
In DTS previously, you could "fool" the package by first compiling the stored procedure with hardcoded column names and dummy values, creating and saving the package and finally changing the procedure back to the actual output. As long as the columns remained the same, all would work. Thats not working for me in SSIS.
Hi all, having a little problem with saving dates to sql databaseI've got the CreatedOn field in the table set to datetime type, but every time i try and run it i get an error kicked up Error "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.The statement has been terminated."I've tried researching it but not been able to find something similar. Heres the code: DateTime createOn = DateTime.Now;string sSQLStatement = "INSERT INTO Index (Name, Description, Creator,CreatedOn) values ('" + name + "','" + description + "','" + userName + "','" + createOn + "')"; Any help would be much appreciated
I have created and deployed my first report. It renders fine for me and the other database admin. When others attempt to view it, we get the error
Query execution failed for data set 'periods'. (rsErrorExecutingCommand), For more information about this error navigate to the report server on the local server machine, or enable remote errors
Initially, We created a local group on the machine that hosts both the database and webserver and added the individuals to that group. Then, within SRS Report manager, we added that group to the Browswer role of the report. The error message was slightly different, in that it couldn't even open the Datasource.
We then added an individual to the database as dbreader, and got the above message. It apprently is starting to render, and when it encounters the first query (dataset "periods", which populates a drop down list for a parameter), it chokes. BTW, the Periods dataset executes a stored procedure dbo.Period_List that has no parameters. It returns a list of reporting periods.
I could not figure out how to "enable remote errors" or find an error log on the server. The C:Program FilesMicrosoft SQL ServerMSSQL.3Reporting ServicesLogFiles Log files did not appear to record any errors.
create table #datatable (id int, name varchar(100), email varchar(10), phone varchar(10), cellphone varchar(10), none varchar(10) ); insert into #datatable exec ('select * from datatable where id = 1') select * from #datatable
I still want to retrieve the data and present it in the software's presentation layer but I still want to remove the temp table in order to reduce performance issue etc.
If I paste the code DROP
TABLE #datatable after insert into #datatable exec ('select * from datatable where id = 1')
Does it gonna work to present the data in the presentation layer after removing the temp table?
The goal is to retrieve the data from a stored procedure and present it in the software's presentation layer and I still need to remove the temptable after using it because I will use the SP many time in production phase.
