ASP.NET 2.0存储过程删除不起作用

Question

I have an event that fires on a button click that calls a stored procedure that deletes the selected row from the database.

In debugging this I have already hard coded the stored procedure with an id to make sure the delete was working on SQL side so I wont post the stored procedure. I also went into my page and on selecting the record to delete made sure that the hidden field was being set to the id of the record.

When I click I see the post back occur so I see the button firing, and it may be something small and stupid with my code or a permissions issue I am not aware of or where to look for.

The parameter for the stored procedure is an integer, and I am not hitting the catch or throwing errors of any kind the data just is not being deleted.

Thanks for any help on this issue as always it is much appreciated.

This is the code that fires when the button is clicked.

if (isAdmin)
{
    SqlConnection cnx = new SqlConnection(server);
    SqlCommand cmd = new SqlCommand("STOREDPROCNAME", cnx);
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.AddWithValue("@VARIABLEFORPROC", Convert.ToInt16(hiddenfield1.Value.ToString()));

    try
    {
       cnx.Open();
       cmd.ExecuteNonQuery();
       cnx.Close();
    }
    catch (Exception ex)
    {
       throw new Exception("Error executing MyProcedureName.", ex);
    }
}

fillDataGrids();

Answer 1

The SQL Int type maps to the C# Int32 type . It's possible that you're getting data loss during your conversion. Try replacing

cmd.Parameters.AddWithValue("@VARIABLEFORPROC", Convert.ToInt16(hiddenfield1.Value.ToString()));

with

cmd.Parameters.AddWithValue("@VARIABLEFORPROC", Convert.ToInt32(hiddenfield1.Value.ToString()));

Answer 2

您必须在SQL之后尝试存储过程的准确性，而不是在事务上尝试并在DB上记录异常，您必须确定错误发生在哪里