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When I am Passing the Value of the selected in the Gridview for deletion it throws Input String was not in correct format exception My Code is,

protected void gridview1_RowCommand(object sender, GridViewCommandEventArgs e)
    if (e.CommandName.ToUpper().ToString() == "DELETEREC")
            ViewState["id"] = e.CommandArgument.ToString().Trim();
            int r = Namespace.SPs.StoredProcedure(Convert.ToInt32(ViewState["id"])).Execute();//Exception thrown Here
            if (r > 0)
                ClientMessaging("Record Deleted Successfully");
        catch (SqlException ex)
NarasimhaMurthy 16-May-13 7:19am
Whats there in Namespace.SPs.StoredProcedure?
Rajesh Kumar Sowntararajan 16-May-13 7:22am
It Calls the Stored Procedure and Connects with SQL Server,Mentioned in the Class File Under the Name Space
ZurdoDev 16-May-13 7:27am
Why? All you have to do is put a breakpoint and see what is happening.
[no name] 16-May-13 10:55am
perfect suggesion. :)

There can be many problems with your code.

1) ViewState["id"] can be blank as the argument you are passing may be blank.
2) If you are able to get a value for ViewState["id"], it can be non numeric.
3) If it is not blank and is a numeric value, the possible error is in your class file code or there is something wrong at database level.

Check for these things first as we can't tell from this small piece of code what can be wrong.
ViewState["id"] = e.CommandArgument.ToString().Trim();
           int r = Namespace.SPs.StoredProcedure(Convert.ToInt32(ViewState["id"])).Execute

Here there may be two issues with the code
1.You are Assigning the Command Argument value to the View sate in string format.
2.Again you are converting the string value to the Int32
The conversion should depend on the type of the parameter in the Stored Procedure Method.

if you can put the Method details it would be helpful.
The Problem is only in my Select Command in the Stored Procedure I didn't select the the Value i was Passing so I had Changed the Select Command then added Datakeynames in Gridview and It worked Perfectly

Thanks All for the Suggestions...

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