View Queries From SqlDataSource At Runtime
Nov 16, 2006
Is there any way to view the queries that a SqlDataSource executes against your chosen data source at runtime? i.e. after all the parameters have been substituted with their values.
I'm assigning a number of parameters at runtime to its selectcommand, and i'm getting some exceptions thrown when attempting to update or delete records from a gridview using it (it's a really old Synergy database, which can be quite particular about the structure of queries). It would be a massive help if i could actually see the exact queries the datasource is attempting to use.
Cheers for any help
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Dec 8, 2006
Hi!
My question is exactly the subject.
My Web Form has only a GridView and a DetailsView, there is no SqlDataSource at project time, i create the SqlDataSource at runtime using code like this in the Page_Load event: (I NEED IT TO BE CREATED DYNAMICALLY)1 Dim SQLDS As SqlDataSource = New SqlDataSource()
2
3 SQLDS.ID = "CustomerDataSource"
4 SQLDS.ConnectionString = ConfigurationManager.ConnectionStrings("connectionstring").ConnectionString
5 SQLDS.SelectCommand = "select customerid,companyname,contactname,country from customers"
6 SQLDS.InsertCommand = "insert into customers(customerid,companyname,contactname,country) values(@customerid,@companyname,@contactname,@country)"
7 SQLDS.UpdateCommand = "update customers set companyname=@companyname,contactname=@contactname,country=@country where customerid=@customerid"
8 SQLDS.DeleteCommand = "delete from customers where customerid=@customerid"
9
10 SQLDS.UpdateParameters.Add(New Parameter("companyname"))
11 SQLDS.UpdateParameters.Add(New Parameter("contactname"))
12 SQLDS.UpdateParameters.Add(New Parameter("country"))
13 SQLDS.UpdateParameters.Add(New Parameter("customerid"))
14
15 Page.Controls.Add(SQLDS)
16
17 If Not Page.IsPostBack Then
18 GridView1.DataKeyNames = New String() {"customerid"}
19 GridView1.DataSourceID = SQLDS.ID
20
21 ' ... and so on
The DetailsView1 uses the same SqlDataSource to show data, but i could not find a way to synchronize the DetailsView1 with the GridView1 when a record is selected in the GridView1.How can I synchronize the DetailsView?I played with the ControlParameter but i can't find either how to add a ControlParameter in code, is there a way? Every place talking about ControlParameter shows something like this: 1 <asp:SqlDataSource ID="SqlDataSource1" runat="server"
2 ConnectionString="<%$ ConnectionStrings:Pubs %>"
3 SelectCommand="SELECT [au_id], [au_lname], [au_fname], [state] FROM [authors] WHERE [state] = @state">
4 <SelectParameters>
5 <asp:ControlParameter Name="state" ControlID="DropDownList1" PropertyName="SelectedValue" />
6 </SelectParameters>
7 </asp:SqlDataSource>
8
Ok. OK. But my SqlDataSource is created dynamically. Any ideas on how to solve this problem?Thanks!
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Oct 31, 2007
In a web site the user has to choose one out of several sql tables to deal with.
He will then be allowed to view the selected table data through a GridView, to insert a new row into and to update a row in the selected table by means of an array of TextBoxes created dynamically on the base of the selected table.
I think it is possible to solve the problem fully by properly configuring at run time an SqlDataSource.
I have solved the issue of data display by declaring in the code behind within the OnPageLoad sub the following:
SqlDataSource1.SelectCommand = "Select * FROM " & selectedTable
While for the GridView1 I have added the selected table columns to the columns collection as follows:
for i=0 to ColumnCount-1 Dim cac As BoundField = New BoundField
cac.HeaderText = HeaderNamesArray(i)
cac.DataField = ProductNamesArray(i)Me.GridView1.Columns.Add(cac)
next
I have difficulty on how to do similar declarations for the insertcommand and update command.
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Sep 5, 2007
Hi
We are using SQL SERVER 2005, enterprise/standard edition for an application that generates queries at runtime and normally having many joins in it. But these queries are taking lot of time when they are executed. After setting the database parameter PARAMETERIZATION to FORCED, performance of the queries have improved a lot but still we want to improve them further. Is there any other parameter that we can set for improving the performance of the queries. We have created the indexes on the basic columns that will be used while querying but it may happen that some other columns may also be used for searching in which case queries become quiet slow. Is there anything like skip-scan indexes(of oracle) in sql server 2005.
Regards
Salil
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Aug 12, 2006
i need to dyanamically generate my SQL commands so to do that i am generating sqldatasource commands programmatically rather declaratively. SELECT commands seems to work fine but DELETE isnt doing anything, here is my code:
SqlDataSource sdsConsultant = new SqlDataSource();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
loadDataSet(); //it just loads dataset used by formview
initializeSDS();
}
}
protected void initializeSDS()
{
string strConnection = ConfigurationManager.ConnectionStrings["myDB"].ToString();
sdsConsultant.ConnectionString = strConnection;
//SELECT
sdsConsultant.SelectCommand = "SELECT * FROM Consultants WHERE (id=@id)";
QueryStringParameter id = new QueryStringParameter("id", "id");
sdsConsultant.SelectParameters.Add(id);
//DELETE
sdsConsultant.DeleteCommand = "DELETE * FROM Consultants WHERE (id=@id2)";
QueryStringParameter id2 = new QueryStringParameter("id2", "id");
sdsConsultant.DeleteParameters.Add(id2);
//UPDATE
Page.Controls.Add(sdsConsultant);
FormView1.DataSource = sdsConsultant;
FormView1.DataBind();
}
my formview control looks like:
<asp:FormView DefaultMode="Edit" ID="FormView1" runat="server" DataKeyNames="id"
OnItemDeleted="FormView1_ItemDeleted"
OnItemDeleting="FormView1_ItemDeleting">
the DELETE doesnt execute and the OnItemDeleted event doesnt do anything either. am i doing something wrong here? plz help
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Mar 8, 2006
Hello
I'm experiencing some problems, binding a SqlDataSource to a GridView.
The following code creates the SqlDataSource: string strConn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; string strProvider = ConfigurationManager.ConnectionStrings["ConnectionString"].ProviderName; SqlDataSource ds = new SqlDataSource(strProvider, strConn); ds.SelectCommand = "SELECT * FROM rammekategori";
Then i bind the SqlDataSource to a GridView:
GridView1.DataSource = ds; GridView1.DataBind();
ErrorMessage:
Format of the initialization string does not conform to specification starting at index 0.
Exception Details: System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0.Line 24: GridView1.DataBind();Am i totally off target here? Can it be something about, that you have to set the datasource of the gridview, before the Page_Load event?
Thanks - MartinHN
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Feb 22, 2008
I've got a page that uses an SqlDataSource to populate a simple DataList of inventory. It has been working just fine until yesterday. All of the sudden when I run the page from Visual Studio, it fails to connect to the database with an SqlException:
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
If I choose to configure the SqlDataSource in the designer, I select the stored procedure and on the last page of the wizard click the Test button and it brings back the results correctly. It turns out, all of the pages in this project are unable to connect at runtime. It's like there's a runtime firewall...
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Jul 20, 2005
Dear All,I'm facing a problem with creating a view.I have a table withfollowing descriptionTab1------------------------------------Col1 col2---- -----Val1 TomVal2 CatVal3 JackVal4 JimNow I'm trying to create a view with following information fromTab1.The output should beTab1View--------------------------------------Col1 Col2 Col3---- ---- -----1 Val1 Tom2 Val2 Cat3 Val3 Jack4 Val4 Jim---------------------------------------So the create view statement add this column dynamically in thisresult set.If any body has any doubt on this query please let me inform.RegardsArijit Chatterjee
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May 23, 2008
Hello Friends. I have few doubts regarding the use of Sqldatasource server control. Is the control flexible enough to achieve these things:- 1.To perform complex queries using Sqldatasource. For eg:- using JOIN to retrieve/insert data from/into multiple tables.2.Performing cascading dropdownlist using sql database as datasource.3.Performing For loops eg:-populating the multiple items into the listbox from sqldatasource. and retrieving them at once.4.use ajax update panel.etc.any example/sample on how to achieve these task?thanks.jack.
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Feb 29, 2008
I am able to step into a sql stored proc through the VS IDE. I am able to look at some values in the quick watch window. But I need to examine the results of certain queries. Like a select statement that gets placed into a temp table. How can I view the results of the query? If their is not an elegant way of doing this in the debugger, then should I put sql statements in the stored proc, that would display the results of the query?(Assuming I would remove them after debugging)
If the answer is yes, then maybe someone can give me some ideas. Like how would I print to the screen the results of the query, or be able to view the results of the query? My sql skills are a bit weak, so I would appreciate any help I can get.
Ralph Goodwin
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Dec 21, 2005
Hello,I am trying to create a view that shows the followingField1: Sum of Amounts from Table AField2: Count of Amounts from Table AField3: Sum of of Amounts from Table BField4: Count of Amounts from Table B......Field3: Sum of of Amounts from Table HField4: Count of Amounts from Table H......Things are a bit more complex but this is the gist.I am using SQL 2000.I know how to do this pretty easily using a stored procedure. But howcan I do it in a view? A SQL server won't meet my needs in thissituation.I tried OpenQuery ('myserver', 'exec myprocedure') but get the messagethat my server is not configured for data access. I tried the systemstored procedure to set data access to true but nothing seemed tohappen.I also tried Select * from (Select Statement1, select statement2)but got syntax error at the comma between statement1 and statement2.Trying to use select Statement1 as ABC to does not seem to work either.Is there a way to do what I want without making 15 views and then afinal view that shows them all together? I know I could probably dosomething by creating a ton of functions, but it really seems thisshould not be that hard...I am definitely open to any easy suggestions!Thanks,Ryan
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Nov 22, 2007
Hi,
I think the title explains it all really. I cannot configure the SqlDataSource to add Insert, Update and Delete statements - not through the wizard anyway.
The view combines two tables, each containing 3 columns. I have tried using different combinations of columns, and ended up selecting all of them (making sure the foreign key column of the first table was given a different alias to the primary key column of the second table) but I still cannot enable editing.
Cheers,
Patrick
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Apr 18, 2008
Hi,
I am having a Data flow task in For each loop which will gets 100 sourcetable names and 100 target table names...
am having a simpleData flow task which trasferes from OLEDBSource to OLEDBDestination.
I am repeating the Dataflow task which transfers from sourcetablename extracted from for loop to a destination table var.
The problem am gettting is for the first table it is able to transfer correcly because I did mapping for those tables at design time...but for the next coming sourcetable-desttable (which r having different no of cols,datatypes) its giving Validation failed...and...needs to refresh metadata....
is there any way to refresh the metadata of Data flow task (I set the property of OLEDBSource validate external meta to false then also same error is coming)
Thanks
Radhika
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Nov 21, 2006
Cannot see the Colums in the "design view" of Queries. All i see when i want to design a new query is *columns
This happens in only one database, in other databases using same server i can see the colums and can tick them to view then in the query.
In enterprise manager i see all the columns.
Using SQL 2000 and MSAccess 2000
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Jul 23, 2007
What is the C# code I use to do this?
I'm guessing it should be fairly simple, as there is only one row selected. I just need to pull out a specific field from that row and then insert that value into a different SqlDataSource.
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Mar 8, 2007
i am using visual web developer 2005 with SQL Express 2005 with VB as the code behindi have one database and three tables in itfor manipulating each table i am using separate SqlDataSource() is it sufficient to use one SqlDataSource() for manipulating all the three tables ? i am manipulating all the tables in the same page only please help me
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Jul 23, 2005
I am looking to create a constraint on a table that allows multiplenulls but all non-nulls must be unique.I found the following scripthttp://www.windowsitpro.com/Files/0.../Listing_01.txtthat works fine, but the following lineCREATE UNIQUE CLUSTERED INDEX idx1 ON v_multinulls(a)appears to use indexed views. I have run this on a version of SQLStandard edition and this line works fine. I was of the understandingthat you could only create indexed views on SQL Enterprise Edition?
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Jul 24, 2012
Write a CREATE VIEW statement that defines a view named Invoice Basic that returns three columns: VendorName, InvoiceNumber, and InvoiceTotal. Then, write a SELECT statement that returns all of the columns in the view, sorted by VendorName, where the first letter of the vendor name is N, O, or P.
This is what I have so far,
CREATE VIEW InvoiceBasic AS
SELECT VendorName, InvoiceNumber, InvoiceTotal
From Vendors JOIN Invoices
ON Vendors.VendorID = Invoices.VendorID
[code]...
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Aug 24, 2007
Hi guys 'n gals,
I created a query, which makes use of a temp table, and I need the results to be displayed in a View. Unfortunately, Views do not support temp tables, as far as I know, so I put my code in a stored procedure, with the hope I could call it from a View....
I tried:
CREATE VIEW [qryMyView]
AS
EXEC pr_MyProc
and unfortunately, it does not let this run.
Anybody able to help me out please?
Cheers!
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Mar 9, 2006
I compared view query plan with query plan if I run the same statementfrom view definition and get different results. View plan is moreexpensive and runs longer. View contains 4 inner joins, statisticsupdated for all tables. Any ideas?
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Nov 30, 2007
Is there an SQL db that can function as a runtime stand alone app, inconjunction with a VB interface?
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Sep 18, 2007
Hello. I am trying to write a VB.net application to call our SSIS packages. I have seen several tutorials, including this one:
http://msdn2.microsoft.com/en-us/library/ms190901.aspx
Which calls for me to import:
Microsoft.SqlServer.Dts.Runtime
However, I don't have this DST Runtime DLL installed on my machine. I have installed "everything" in SQL Server Developer Edition and Visual Studio. Any idea how I can get this?
Thanks,
Chris
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Jul 20, 2005
HelloWhen I use a PreparedStatement (in jdbc) with the following query:SELECT store_groups_idFROM store_groupsWHERE store_groups_id IS NOT NULLAND type = ?ORDER BY group_nameIt takes a significantly longer time to run (the time it takes forexecuteQuery() to return ) than if I useSELECT store_groups_idFROM store_groupsWHERE store_groups_id IS NOT NULLAND type = 'M'ORDER BY group_nameAfter tracing the problem down, it appears that this is not preciselya java issue, but rather has to do with the underlying cost of runningparameterized queries.When I open up MS Enterprise Manager and type the same query in - italso takes far longer for the parameterized query to run when I usethe version of the query with bind (?) parameters.This only happens when the table in question is large - I am seeingthis behaviour for a table with > 1,000,000 records. It doesn't makesense to me why a parameterized query would run SLOWER than acompletely ad-hoc query when it is supposed to be more efficient.Furthermore, if one were to say that the reason for this behaviour isthat the query is first getting compliled and then the parameters aregetting sent over - thus resulting in a longer percieved executiontime - I would respond that if this were the case then A) it shouldn'tbe any different if it were run against a large or small table B) thisperformance hit should only be experienced the first time that thequery is run C) the performance hit should only be 2x the time for thenon-parameterized query takes to run - the difference in response timeis more like 4-10 times the time it takes for the non parameterizedversion to run!!!Is this a sql-server specific problem or something that would pertainto other databases as well? I there something about the coorect use ofbind parameters that I overall don't understand?If I can provide some hints in Java then this would be great..otherwise, do I need to turn/off certain settings on the databaseitself?If nothing else works, I will have to either find or write a wrapperaround the Statement object that acts like a prepared statement but inreality sends regular Statement objects to the JDBC driver. I wouldthen put some inteligence in the database layer for deciding whetherto use this special -hack- object or a regular prepared statementdepending on the expected overhead. (Obviously this logic would onlybe written in once place.. etc.. IoC.. ) HOWEVER, I would desperatelywant to avoid doing this.Please help :)
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Jul 10, 2006
I just ran a testbed of 4 types of SQL queries:1. inline SQL with a StringBuilder2. managed sql3. SQL text processing (@SQL as varchar(5000); SET @SQL = 'SELECT ' + @var...)4. a regular sproc that has the columns and table name hard coded1,2, and 4 always end up at about the same time given the averages.3 is always at last 1.5 times slower, and usually closed to 2 times.1 and 2 both use StringBuilders, the code is a direct copy, and 3 is a copy as well.My managed SQL is: [Microsoft.SqlServer.Server.SqlProcedure] public static void usp_Items_Select_Managed(SqlString table, SqlString name, SqlString value) { // sql StringBuilder stringBuilder = new StringBuilder(); stringBuilder.AppendFormat( "SELECT {0}.* FROM {0} WHERE {0}.{1} = {2}", table, col, value ); SqlConnection sqlConnection = new SqlConnection("context connection=true"); SqlCommand sqlCommand = new SqlCommand(stringBuilder.ToString(), sqlConnection); sqlConnection.Open(); SqlContext.Pipe.Send(sqlCommand.ExecuteReader()); sqlConnection.Close(); }Is there anything wrong with my Managed SQL, or is this just the way that it is?Thanks
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May 2, 2001
I'm running a package on SQL Server 7, SP2 created in the same environment.
When running a package from DTS Designer, I get an execution status of "Error Occurred" in the Package Execution Status dialog on one of the data pump tasks I'm running along with the number of rows inserted. When I double-click on the task, I get the following message: " The Connection is currently being used by a task. The connection cannot be closed or reused".
Both the exception log for the task and the package, specified for error output, indicate the task ran successfully and the clients confirm that the appropriate number of rows have been inserted in the table. Has anyone encountered this error that can explain the cause/cure?
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Jun 4, 2001
Hi,
When I'm using installshield to install sql runtime, I get the message "The Workstation service has not been started" during Configure SQL Server Agent. Does someone know what it means and how to solve it?
Thank you
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May 12, 2000
Hi Everyone,
I've an DTS package, which has an Execute SQL Task. I'm doing the operations based on a parameter. I need to pass that in runtime. Is there any way to do that in Execute SQL Task? BOL says that the runtime parameter can be set by giving a question mark(?). But when I tried this, it says, value not passed.
Thanks in advance.
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Sep 4, 2007
I am Using Sql Server 2005 enterprise edition to develop an accounting system.
now i want to distribute this software to other cleints.
I have created a setup which includes all the components required for the run time of the software but i dont know how to include the sql server database in it.
as i know that i have created access based software i used to include the database file in the setup and it would work but in the case of sql server i dont know how to do it .
is there any runtime of sql server which needs to be downloaded or any other way out.
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May 30, 2008
Hi.
I posted similar stuff in one of my previous topic. what i need to do is parse database name runtime
means sample example is
USE <%1>
GO
SELECT * FROM Table_Name
here instead of <%1> i need to pass Test DB name
USE Test
GO
SELECT * FROM Table_Name
my .sql file contains <%1> so i need to replace it
i tried like
declare @t varchar(50)
declare @chg22 varchar(500)
set @t = 'Test'
set @chg22 = 'USE <%1> GO'
set @chg22 = REPLACE(@chg22,'<%1>',@t)
exec(@chg22)
SELECT * FROM Table_Name
but i am not getting it..in above example i am just took one line select * from table_name but actually in .sql file more that 300 lines are there so i m not able to concatenate it..
T.I.A
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Nov 30, 2006
We run a regular query through Excel that is linked to a Microsoft SQL Server data source.
We have run this query routinely for the past few years. Suddenly this query has started returning an error message - “[Microsoft][ODBC SQL Server Driver] [SQL Server] Difference of two datetime columns caused overflow at runtime�. It seems to be a common error (as per Google search) however I don’t want to go messing around with something I don’t fully understand. Can anyone point me in the direction of what to look out for?
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Mar 28, 2007
Hi,
Currently im using SQL queries in combination with ASP.NET..
I have currently only one table('Requests'), which has all the user info of name,id,studyrequested etc.. A person can request for any number of studies.
Now the prob is that from now on whenever a user requests for a new study not only should his details be stored in the Request table but also in a new Users table. In the Users table that particular users details must only be loaded once.. i.e. if the same user enrolls for another study his details should only be updated in the requests table and not in the Users table, since his details have already been loaded once in the Users Table..
While this works fine for new users, but what bout the old users already stored in the Requests table before the Users table existed.
Is there any way i could run a sql script only once at runtime, so that all the old legacy users are loaded once in to the Users Table.
Thanks,
Nitin
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Oct 2, 2006
Hi!Can anybody tell me what I'm missing here?I'm trying to insert a new record into a sql-database from code atruntime (not stored procedure),but get the following error message:"The 'strUn' is not permitted in this context.Only constants, expressions or variables allowed here.Column names are not permitted."//Create sql connectionSqlConnection con = new SqlConnection("server=LocalHost;database=Users;uid=geir;pwd=geir");//Open database connectioncon.Open();//Create variables to hold values from textboxesstring strUn = txtUsername.Text;string strPw = txtPassword.Text;//Create a sqlCommand to insert textbox values into sql-databaseSqlCommand sqlcmd = new SqlCommand();sqlcmd.CommandText = "INSERT INTO tblUsers(Username,Password)VALUES(strUn, strPw)";sqlcmd.Connection = con;try{sqlcmd.ExecuteNonQuery();}catch(SqlException ex){lblInfo.Text = "ExecuteNonQuery failed because: " +"" +ex.Message;}finally{con.Close();}
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Feb 19, 2007
My boss claims that there is a free SQL server runtime. Is thistrue? I was only aware of MSDE. But I believe the connections arecapped at 5 in MSDE. If there is a free SQL server runtime, are thereany limitations to using it (performance, connection count)? Thanks.
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