Sql table record update using C# & SQL WHERE clause

I modified the INSERT INTO statement and used it for the UPDATE command. Below is the INSERT INTO command. Data insertion is nicely done.

try
{
SqlComm = new SqlCommand("INSERT INTO MyDataTable (DataID, DataDesc, DataDate, DataQty) VALUES (@DataID, @DataDesc, @DataDate, @DataQty)", SqlConn);
SqlComm.Parameters.AddWithValue("@DataID", txtDataID.Text);
SqlComm.Parameters.AddWithValue("@DataDesc", txtDataDesc.Text);
SqlComm.Parameters.AddWithValue("@DataQty", int.Parse(txtDataQty.Text));
SqlComm.Parameters.AddWithValue("@DataDate", dtpDataDate.Value);
SqlComm.ExecuteNonQuery();

MessageBox.Show("Data inserted!", "DB Connection With App.Config", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
Clear();
btnAddData.Enabled = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

I have fixed the UPDATE statement and it has no errors.

SqlComm = new SqlCommand("UPDATE MyDataTable SET DataDesc='@DataDesc', DataDate='@DataDate', DataQty='@DataQty' WHERE DataID='@DataID'", SqlConn);

But when I check the database table the record data hadn't updated. The code is at the below.

private void btnUpdateData_Click(object sender, EventArgs e)
{
try
{
SqlComm = new SqlCommand("UPDATE MyDataTable SET DataDesc='@DataDesc', DataDate='@DataDate', DataQty='@DataQty' WHERE DataID='@DataID'", SqlConn);
SqlComm.Parameters.AddWithValue("@DataID", txtDataID.Text);
SqlComm.Parameters.AddWithValue("@DataDesc", txtDataDesc.Text);
SqlComm.Parameters.AddWithValue("@DataQty", int.Parse(txtDataQty.Text));
SqlComm.Parameters.AddWithValue("@DataDate", dtpDataDate.Value);
SqlComm.ExecuteNonQuery();

//sqlComm.CommandText = @"UPDATE tableName SET paramColumn='@paramName' WHERE conditionColumn='@conditionName'";

MessageBox.Show("Data updated!", "DB Connection With App.Config", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

Clear();
DisableButtons();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}