尽管命令正确，但表未更新

Question

I use a stored procedure for inserting, updating and deleting records, and I use LINQ for executing or calling the procedures. After clicking on submit button, the update procedure has been executed but there is no change in the table. If I pass a value like "Jack" instead of fname_txt,text. it works and is updated? I don't know what's the different between a textbox object and a value in a quotation mark:! Here is the code:

    protected void submit_Click(object sender, EventArgs e)
    {

        try
        {
            ZobLinqDataContext db = new ZobLinqDataContext();
            string pasword = CryptorEngine.Encrypt(pass_txt.Text, true);
            long uid = Convert.ToInt64(Request["uid"]);
            db.pUpZDBUser(uid,
                uname_txt.Text,
                pasword,
                fname_txt.Text.Trim(),
                lname_txt.Text.Trim(),
                modir.Checked,
                voting.Checked,
                Convert.ToInt32(Zarib_txt.Text),
                false
                );
            db.SubmitChanges();
            Response.Write(uname_txt);
        }
        finally
        {
            Session["sub"] = "1";
        }

    }

this is the update proc:

    USE [ZOBDB]
GO
/****** Object:  StoredProcedure [dbo].[pUpZDBUser]    Script Date: 04/11/2012 15:17:41 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[pUpZDBUser] 
    @UID bigint,
    @Uname  nvarchar(100),
    @Pass   nvarchar(100),
    @fname  nvarchar(50),
    @lname  nvarchar(50),
    @KU bit,
    @KV bit,
    @ZribV  int,
    @del bit
As
BEGIN TRANSACTION UpUser    
    Set NOCOUNT ON

    UPDATE Users SET 
        Uname=@Uname, 
        Pass=@Pass, 
        fname=@fname, 
        lname=@lname, 
        KU=@KU, 
        KV=@KV, 
        ZribV=@ZribV,
        del=@del
    where (UID=@UID)

    --RollBack if Err
    IF @@ERROR != 0 and @@ROWCOUNT != 1
    BEGIN
        declare @msg nvarchar(30)
        set @msg = ' error '+@Uname
        ROLLBACK
        RAISERROR(@msg,16,1)
        RETURN
    END
COMMIT TRANSACTION UpUser
RETURN

Answer 1

I think you'll have more luck if you change the SPROC to

--RollBack if Err     
IF @@ERROR != 0 **OR** @@ROWCOUNT != 1 

This way you should get the error being raised and you can see what the issue is. Possibly the UID doesn't exist?

Answer 2

Best guess is that your proc is throwing an exception that you're not catching, perhaps because there's a length constraint on the column, and that your fname_txt.Text.Trim() value is zero length, and "Jack" of course is not.

Add a catch block to your code to prover there is nothing untoward happening in your proc. Also more detail in your question would be helpful.