SqlDataSource With Stored Procedure With Parameters Returns No Data

Mar 21, 2007

I have a Gridview bound to a SQLDataSource that uses a Stored Procedure expecting 1 or 2 parameters. The parameters are bound to textbox controls. The SP looks up a person by name, the textboxes are Last Name, First Name. It will handle last name only (ie. pass @ln ='Jones' and @fn=null and you get all the people with last name=Jones. I tested the SP in Management Studio and it works as expected. When I enter a last name in the Last Name textbox and no First Name I get no results. If I enter a Last Name AND First Name I get results. I don't understand.

Here's the HTML View of the page. The only code is to bind the Gridview when the Search button is pressed.

<%@ Page Language="VB" AutoEventWireup="true" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:TextBox ID="TextBox1" runat="server" TabIndex=1></asp:TextBox>&nbsp;
            <asp:TextBox ID="TextBox2" runat="server" TabIndex=2></asp:TextBox>&nbsp;
            <asp:Button ID="Button1" runat="server" Text="Search" TabIndex=3  />
            &nbsp;&nbsp;
            <hr />
        </div>
        <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True"
   DataSourceID="SqlDataSource1" DataKeyNames="EmpID" CellPadding="4"
   EnableSortingAndPagingCallbacks="True" ForeColor="#333333" GridLines="None"
   AutoGenerateColumns="False">
            <Columns>
                <asp:BoundField DataField="EmpID" HeaderText="Emp ID" ReadOnly="True" SortExpression="EmpID" />
                <asp:BoundField DataField="FullName" HeaderText="Full Name" SortExpression="FullName" />
                <asp:BoundField DataField="Nickname" HeaderText="Nickname" ReadOnly="True" SortExpression="Nickname" />
                <asp:BoundField DataField="BGS2" HeaderText="BGS2" SortExpression="BGS2" />
                <asp:BoundField DataField="Phone" HeaderText="Phone" SortExpression="Phone" />
                <asp:BoundField DataField="email" HeaderText="Email" SortExpression="email" />
            </Columns>
        </asp:GridView>
        <asp:SqlDataSource ID="SqlDataSource1" runat="server"
   ConnectionString="<%$ ConnectionStrings:EmpbaseConnectionString %>"
            SelectCommand="GetByName" SelectCommandType="StoredProcedure">
            <SelectParameters>
                <asp:ControlParameter ControlID="TextBox2" Name="fn" PropertyName="Text" Type="String"
     ConvertEmptyStringToNull=true/>
                <asp:ControlParameter ControlID="TextBox1" Name="ln" PropertyName="Text" Type="String"
     ConvertEmptyStringToNull=true/>
            </SelectParameters>
        </asp:SqlDataSource>
    </form>  
</body>
</html>

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Hello,
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. 
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AS
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RETURN
 
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I have a stored procedure




Code Block
CREATE PROCEDURE WEA_SelectEmployeeListByCourseOrProject
@ProjectID int,
@CourseID int,
@blnIsSearch int,
@strUserName nvarchar(20)

AS
SET CONCAT_NULL_YIELDS_NULL OFF

DECLARE @strRole nvarchar(15),
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SET CONCAT_NULL_YIELDS_NULL ON
GO






now if i run this stored procedure in Query Analyzer like so...

exec wea_SelectEmployeeListByCourseOrProject 0,0,1,'K_T'

i get 48 records returned.

but if i lift the SQL out of the stored procedure and run it in Query Analyzer like so....





Code Block
SET CONCAT_NULL_YIELDS_NULL OFF

DECLARE @ProjectID int,
@CourseID int,
@blnIsSearch int,
@strUserName nvarchar(20)
SET @ProjectID = 0
SET @CourseID = 0
SET @blnIsSearch = 1
SET @strUserName = 'K_T'


DECLARE @Role nvarchar(15),
@ContactID int
SELECT @Role = Role, @ContactID = ContactID FROM Contact WHERE UserName = @strUserName
PRINT @ContactID
Select DISTINCT Contact.ContactID ID, UPPER(Surname + ' ' + Forename ) AS Description, UPPER(Surname + ' ' + Forename + ' ' + ContactReference) AS Description_CR
, UPPER(ISNULL(ContactReference,'')) ContactReference
FROM Contact
LEFT JOIN AssignedEmployee on Contact.ContactID = AssignedEmployee.ContactID
WHERE RUEmployee=1
AND
( ((@CourseID = 0 AND @blnIsSearch=1 ) OR COALESCE(AssignedEmployee.CourseID,0) = @CourseID)) -- the above line was modified to make sure only employees explicitly assigned to a project are brought back. unless it's a search
AND
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AND
(
(@Role = 'MIS_TUTOR'
AND ( (AssignedEmployee.ContactID = @ContactID OR CourseID IN (SELECT CourseID FROM AssignedEmployee WHERE ContactID = @ContactID AND Lead = 1)))
OR
AssignedEmployee.ProjectID IN (SELECT ProjectID FROM AssignedEmployee WHERE CourseID IS NULL AND Lead = 1 AND ContactID = @ContactID)
)
OR
(@Role <> 'MIS_TUTOR')
)


SET CONCAT_NULL_YIELDS_NULL ON







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so why do i get a difference when its the same SQL??

Username 'K_T' is of role 'MIS_TUTOR' therefore @Role = 'MIS_TUTOR'

any help on unravelling this mystery is appreciated!

Cheers,
Craig

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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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(

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DECLARE @month VarChar(10)

DECLARE @year VarChar(10)

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execute usp_IMessage 832,101,@tmpmsgprefix,@tmpmsg,','

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SourceType: Direct Input
IsQueryStoredProcedure: False (this is greyed out and cannot be changed)
Bypass Prepare: True
SQL Statement: EXEC FL_CUSTOM_sp_ml_location_load ?, ?;

Parameter Mapping:

Variable Name Direction Data Type Prmtr Name Prmtr Size
User: system_cd Input NVARCHAR 0 10
User: location_type_cd Input NVARCHAR 1 10

Variables:

location_type_cd - Data type - string; Value - Store (this is static)
system_cd - Data type - string - ??????
The system code changes based on the system field for each record in the load table

Sample Data:

SysStr # Str_Nm
3 7421Store1
3 7454Store2
1815061Store3
1815063Store4
1615064Store5
1615065Store6
1615066Store7
7725155Store8

STORED PROCEDURE: The stored procedure takes data from a load table and inserts it into another table:

Stored procedure variables:
ALTER PROCEDURE [dbo].[sp_ml_location_load]
(@system_cd nvarchar(10), @location_type_cd nvarchar(10))
AS
BEGIN .....................

This is an example of what I want to accomplish: I need to be able to group all system 3 records, then pass 3 as the parameter for system_cd, run the stored procedure for those records, then group all system 18 records, then pass 18 as the parameter for system_cd, run the stored procedure for those records and keep doing this for each different system in the table until all records are processed.

I am not sure how or if it can be done to pass the system parameter to the stored procedure based on the system # in the sys field of the data.

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I have an issue with using multiple parameters in SQL Reporting services where data is passed in from a stored procedure



When running the report in design mode - I can type in a parameter sting and it runs fine



In the report preview screen I can select single parameters by ticking the drop down list and again it runs fine



as soon as I tick more than one I get an error



An error occurred during local report processing

Query execution failed for data set €˜data'

Must declare the scalar variable '@parameter'



Some info...



The dataset 'workshop' is using a sproc to return the data string?

I get multiple values back fine in the sproc using this piece of code

(select [str] from iter_charlist_to_table( @Parameter, DEFAULT) ))



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Looking through the online books it says...



You can define a multivalued parameter for any report parameter that you create.

However, if you want to pass multiple parameter values back to a query, the following requirements must be satisfied:

The data source must be SQL Server, Oracle, or Analysis Services.
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repMain is a repeater on the aspx sheet
lstUser is a stored proc with one varchar(10) parameter called cSort
Here is my current code that will result in no called to StatementCompleted and no data.  Pull cSort parameter from the proc and it works just fine.  Obviously I'm setting it wrong.
string cSelect = "dbo.lstUser";
dsUser = new SqlDataSource();
dsUser .ConnectionString = GetConStr();
dsUser .SelectCommand = cSelect;

dsUser .SelectParameters.Add( "cSort", TypeCode.String, "" );

dsUser .Selected += StatementCompleted;
repMain.DataSource = dsUser ;
 
TIA,
Nick Hustak

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-------------
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as

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------------

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Apr 14, 2007

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I am calling it from an ASP page.   Initially I just called it and didn't worry about the return value.  However the Stored procedure now will return a value to determine if it made the change or not and if not why (ie log entry was at incorrect time etc).
 I woudl liek to capture this returned value in my code to display a message to the user but am havign problems finding the right way to get the value.
I am calling the SP as follows:
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Feb 3, 2004

Hi !

I have trying to do an insert with a subroutine that calls a stored procedure, but it doesn’ t run. The page loads properly but nothing is inserted in the table of the database, no errors appears after submit the form.
<asp:Button id="SubmitButton" OnClick="Send_data" Text="Submit" runat="server"/>

Here is the code:


Sub Send_data(Sender As Object, E As EventArgs)

Dim CmdInsert As New SqlCommand("new_user1", strConnection)
CmdInsert.CommandType = CommandType.StoredProcedure

Dim InsertForm As New SqlDataAdapter()
InsertForm.InsertCommand = CmdInsert

CmdInsert.Parameters.Add(New SqlParameter("@RETURN_VALUE", SqlDbType.bigint, 8, "User_id"))
CmdInsert.Parameters("@RETURN_VALUE").Direction = ParameterDirection.ReturnValue

CmdInsert.Parameters.Add(New SqlParameter("@e_mail", SqlDbType.varchar, 50, "e_mail"))
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End Sub


What it lacks?

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