/// <summary>
/// Updating row in the grid
/// </summary>
/// <param name="sender">Grid View</param>
/// <param name="e">Event args</param>
void grid_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
// extract and store input values in the collection
StringCollection updateValues = new StringCollection();
foreach (DataControlFieldCell cel in grid.Rows[e.RowIndex].Controls)
{
foreach (Control ctl in cel.Controls)
{
if (ctl.GetType().Name == "TextBox")
{
TextBox txt = (TextBox)ctl;
updateValues.Add(txt.Text);
}
}
}
int paramIndex = ParameterValueIndex(sender, e.RowIndex);
for (int i = 0; i < _settings.Parameters.Count; i++)
{
string parName = _settings.Parameters[i].Name;
if (_settings.IsRequiredParameter(parName) && string.IsNullOrEmpty(updateValues[i]))
{
// throw error if required field is empty
ErrorMsg.InnerHtml = "\"" + _settings.GetLabel(parName) + "\" is a required field";
ErrorMsg.Visible = true;
e.Cancel = true;
return;
}
else if (parName == _settings.KeyField && _settings.IsKeyValueExists(updateValues[i]))
{
// check if key value was changed; if not, it's ok to update
if (!_settings.IsOldValue(parName, updateValues[i], paramIndex))
{
// trying to update key field with value that already exists
ErrorMsg.InnerHtml = "\"" + updateValues[i] + "\" is already exists";
ErrorMsg.Visible = true;
e.Cancel = true;
return;
}
}
else
{
_settings.Parameters[i].Values[paramIndex] = updateValues[i];
}
}
ExtensionManager.SaveSettings(_extensionName, _settings);
Response.Redirect(Request.RawUrl);
}