DataSource Controls :: Returning String Value Using Stored Procedure And Linq
Feb 7, 2010
I am having problems returning a string value through a stored procedure/linq to a label. Everything works fine if I return an integer value but I cant get a string value to bind to a label. I get the error message
Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value,
NumberFormatInfo NumberFormat) +201
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +66
[InvalidCastException: String "System.Data.Linq.SqlClient.SqlPr" to 'Integer' is invalid‚]
This is the stored procedure
ALTER PROCEDURE test
AS
Select ProductName
From Products
This is the vb page
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim db As New DataClassesDataContext
Dim product As Integer = db.test.ToString
Label1.Text = product
End Sub
This is the aspx page
<form id="form1" runat="server">
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</form>
I call this stored procedure with a dataset. It always returns a 0 but should return a 1 or 2. Does anybody know why it isn't returning a 1 or 2.
ALTER PROCEDURE dbo.sp_InsertLinkVote @LinkId int, @LinkVoter nvarchar(50), @LinkVotesDateTime datetime, @LinkVotesGoodBad bit AS /* SET NOCOUNT ON */ 　 If EXISTS (SELECT * FROM LinkVotes WHERE LinkId=@LinkId and LinkVoter = @LinkVoter )RETURN 1 ELSE INSERT INTO dbo.LinkVotes (LinkId,LinkVoter,LinkVotesDateTime,LinkVotesGoodBad)VALUES (@LinkId,@LinkVoter,@LinkVotesDateTime,@LinkVotesGoodBad)RETURN 2
Here is were a call it in my code behind. Dim VoteCheck As Integer Dim InsertVote As New DataSetStoredProceduresTableAdapters.QueriesTableAdapter VoteCheck = InsertVote.sp_InsertLinkVote(LinkId, User.Identity.Name, DateAndTime. Now, True) '0 is a good vote. If VoteCheck = 0 Then
It seems to insert and not insert correctly, I just cannot get it to return the correct value.
I am developing a page in ASP.Net where I have the user enter a letter into a textbox. They then click a submit button and I all of the userids that start with that letter are to be displayed. So I need the SP to go through the database and match first letters with what was entered. Here is what I have as my code for the SP:
CREATE PROCEDURE dbo.exp2 @testchar Char(1) declare @flag as char(2) set @flag = @testchar + '%' select userid from ex_database where userid like @flag
I am trying to return single string result through a stored procedure and Linq. This works fine when I test the stored procedure but it is not returning the value to the page. The value returned is always 0 which is the return value. This is the stored procedure:
ALTER PROCEDURE Login @CustomerName nvarchar(50), @Password nvarchar(50) output As Select @Password=Password From Customers Where Customers.CustomerName=@CustomerName
This is the vb ALTER PROCEDURE Login @CustomerName nvarchar(50), @Password nvarchar(50) output As Select @Password=Password From Customers Where Customers.CustomerName=@CustomerName is the code created by the designer
This is the designer function <FunctionAttribute(Name:="dbo.Login")> _ Public Function Login(<Parameter(Name:="CustomerName", DbType:="NVarChar(50)")> ByVal customerName
As String, <Parameter(Name:="Password", DbType:="NVarChar(50)")> ByRef password As String) As IntegerDim result As IExecuteResult = Me.ExecuteMethodCall(Me, CType(MethodInfo.GetCurrentMethod,MethodInfo), customerName, password) password = CType(result.GetParameterValue(1),String) End Function
Im trying use a storedprocedure where depending on the status of the room if ='Vacant' And checkIn =date and the result will be put in a gridview, but i kept returning an error that says, "Conversion failed when convertng datetime from character string". Heres the code.
I have problem with a stored procedure and function that return the same shape, but as they are different methods LINQ won' t let me cast between the two. Please see code for the two SPROCs below (This is actually simplified to represent the problem, so please don't spend lots of time explaining alternative ways of writing the function/sproc.)
Table Valued Function "getCategories()" SELECT categoryName, categoryID FROM categories SPROC "getUnusedCategories" SELECT categoryName, categoryID FROM CategoryInstances cI FROM dbo.SMAN_getCategories(@SiteMANID, @SectionID) c LEFT JOIN @EntityResultsTable er
I have a Procedure which should return only 1 Record on selecting record according to Priority.
BEGIN DECLARE @Accounts nvarchar(MAX) SELECT @Accounts = ISNULL([map_user_modules].[Accounts], '') FROM [map_user_modules] WHERE [map_user_modules].[id_user] = 231 AND [map_user_modules].[id_module] = 5 IF ((@Accounts = '') OR (@Accounts = 'All')) SELECT @Accounts = null
BEGIN Select @@ROWCOUNT as Priority2 END IF @@ROWCOUNT = 1 BEGIN Return END
BEGIN Select @@ROWCOUNT as Priority3 END IF @@ROWCOUNT = 1 BEGIN Return END
BEGIN Select @@ROWCOUNT as Priority4 END IF @@ROWCOUNT = 1 BEGIN Return END
In the above statement Suppose we take a scenario where Select @@ROWCOUNT as Priority3 is executed, I get two tables returned, One is the Table returned by Select @@ROWCOUNT as Priority3 and the other is the Table returned by Select @@ROWCOUNT as Priority2 which has no Records. How can I eliminate the Empty table that returns no records.
I am using SqlHelper.ExecuteDataset(MyConnectionString, CommandType.StoredProcedure, "GetInformation", new SqlParameter("@ID", ID));
In my stored Procedure, I am doing a lot of calculation with joins and it took 19 sec to execute at my sql Server 2008. My application had been working perfectly for 5 days but now as database increases, I found a problem that my connection is breaking at that point. At Sql Server, it execute fine but when I add a breakpoint and watch the stored procedure is returning null.
Is it posible to run a stored procedure using linq? I dont mean one that returns a table i just mean one that runs a set of transactions exec sp_MyProc @Var or something?
I am confused here as to how to handle this. I have a stroed procedure that using the IN clause like so:
[Code]....
Now, partners can be either a single partner ID like so: 12345 or it can be many like: 12345, 22222, 33333Here is the sqlDataReader from my code:
[Code]....
When partner_list contains only one partner id like "12345" it works fine. If it has more than one then the DataReader states that there are no rows in the reader? I also tried to send the dealer list as a string with ticks, like '12345','22222','33333' but that doesnt work either.
I have a several count stored procedures that are binding to gridview nicely for individual items. I now want a ful count of row so I use a stored procedure with:
[Code]....
Which works fine when testing in the DB and returns results like it should. My problem is that for the life me I cannot work how to display the results to a Label.Text or how to do it when my calendar has posted back thats where @LogDate comes from).
I'm trying to pass the text value of a text box as a query string value to a stored procedure. I was hoping someone could point me in the right direction. Button Code:
[Code]....
Stored Procedure:
[Code]....
The results page datalist:
[Code]....
Code Behind of results page:
[Code]....
I'm sure i've got this entirely backwards. However if I change the NULL value in the stored procedure with some string value (eg."Donkeys") it pulls all the values that contain "Donkeys" into the datalist on my results page.
Is it possible to save execute stored proc command in a string variable and then execute string variable? Does this logic fits into LINQ2SQL? Why I want to do this - INstead of passing user control references to server, I want to save user control values to string in client side java script and then pass string to server to do actual stored proc execution. Hopefully this will improve performance.
My question is: I have update stored procedure in my database (simple update stmt) I am finding difficulty in writing a ADO.Net(C#) connection string for update stored procedure. i have 4 columns and i first 3 columns have constant values. The 4th column values needs to be updated. At the same time i need to increment and then update the table.
I started learning LINQ, So i thought of just creating gridview with sorting and paging using objectdatasource using LINQ. So i got this link
[URL] which Brian Orrel tell us how to do using IQueryable Interface. but i have nearly 300 lines of stored procedure which joins nearly 20 tables. so i thought of creating a stored procedure and using that instead of IQuerytable.
I always have this problem returning an out parameter from sql server using linq. So I have to use other means may be dataset. The following is the stored procedure: ALTER PROCEDURE [dbo].[InsertIntoTestProfile]
Initially, I have tried to use stored procedure. But I changed my mind and preferred to call sql query in codebase with command text. However, it stills tries to find initially-called stored procedure (which is neither called or exists).I think that it is related caching. But I tried it with different browsers it did not work.What might be the reason?
I want to execute a method on VB.Net to return a date which is in the stored procedure. I tried using ExecuteScalar but it doesnt work it retruns error
'Implicit conversion from data type datetime to int is not allowed. Use the CONVERT function to run this query'
below is the code
Public Function GetHolidaydate(ByVal struserID as String) As DateTime Dim objArgs1 As New clsSQLStoredProcedureParams objArgs1.Add("@userID", Me.Tag) objArgs1.Add("@Date", 0, 0, ParameterDirection.Output) Return (CDate(ExecuteScalar(clsLibrary.MyStoredProcedure.GetHolidayDate, objArgs1))) End Function
