Question

Like any other question I am facing problem whenever I am trying to UPDATE my DataGridView through UI. Here is the error I am getting:

SQLException was unhandled. String or binary data would be truncated. The statement has been terminated.

Now here is my column list which I am trying to update:

1. ShipTrackingNumber (nvarchar(100), null)

2. ShipMethodTransmitted (nvarchar(50), null)

3. DateShipTransmitProcessed (datetime, null)

4. ShipmentProcessedBy (nvarchar(50), null)

5. Critical (nchar(1), null)

6. ShipTransmitStatus (nvarchar(50), null)

Now you got the columns listings and their properties. Here is the code which updates these columns:

public void SaveDataSet(DataTable table)
{

  foreach (DataRow row in table.Rows)
  {

    SqlCommand cmd2 = new SqlCommand(
    "update dbo.JobStatus SET ShipTrackingNumber = '@trackingNumber', ShipMethodTransmitted = '@TransmitMethod', DateShipTransmitProcessed = @DateProcessed, ShipmentProcessedBy = '@ProcessedBy', Critical = '@Critical', ShipTransmitStatus = '@TransmitStatus' WHERE JobTableId = @JobTableId ", _mySqlConnec);


    //Updated the parameters to the SQL Query!
    cmd2.Parameters.Add(new SqlParameter("@trackingNumber", row["Tracking#"].ToString()));
    cmd2.Parameters.Add(new SqlParameter("@TransmitMethod", row["TransmitMethod"].ToString()));
    cmd2.Parameters.Add(new SqlParameter("@DateProcessed", row["DateProcessed"]));
    cmd2.Parameters.Add(new SqlParameter("@ProcessedBy", row["ProcesssedBy"].ToString()));
    cmd2.Parameters.Add(new SqlParameter("@Critical", row["Critical"].ToString()));
    cmd2.Parameters.Add(new SqlParameter("@TransmitStatus", row["Status"].ToString()));
    cmd2.Parameters.Add(new SqlParameter("@JobTableId", row["JobID"].ToString()));

    cmd2.Connection = _mySqlConnec;
    _mySqlConnec.Open();
    cmd2.ExecuteNonQuery();
    _mySqlConnec.Close();
  } 
}

}

Can anyone please help me in this regard. Thank You!

Answer 1

You do not need to have quotes around any of your paramters.

change your sql to:

update dbo.JobStatus SET ShipTrackingNumber = @trackingNumber, 
ShipMethodTransmitted = @TransmitMethod, 
DateShipTransmitProcessed = @DateProcessed, 
ShipmentProcessedBy = @ProcessedBy, Critical = @Critical, 
ShipTransmitStatus = @TransmitStatus WHERE JobTableId = @JobTableId 

It is basically trying to insert the string “@Critical” into a nchar(1) which is causing the truncation error.