My code is below:
protected
void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
}
}
protected void Page_PreRender(object sender, EventArgs e)
{
this.BuildGrid();
}
protected void Page_Init(object source, System.EventArgs e)
{
}
private void BuildGrid()
{
GridBoundColumn boundColumn;
boundColumn = new GridBoundColumn();
boundColumn.DataField = "CountryId";
boundColumn.HeaderText = "Country Number";
this.RadGrid1.MasterTableView.Columns.Add(boundColumn);
boundColumn = new GridBoundColumn();
boundColumn.DataField = "CountryName";
boundColumn.HeaderText = "Country Name";
this.RadGrid1.MasterTableView.Columns.Add(boundColumn);
RadGrid1.Width = Unit.Percentage(50);
RadGrid1.PageSize = 50;
RadGrid1.AllowPaging = true;
RadGrid1.PagerStyle.Mode = Telerik.Web.UI.GridPagerMode.NextPrevNumericAndAdvanced;
RadGrid1.AutoGenerateColumns = false;
RadGrid1.ShowStatusBar = true;
RadGrid1.Skin = "Web20";
RadGrid1.ShowStatusBar = true;
RadGrid1.GridLines = GridLines.Horizontal;
RadGrid1.HorizontalAlign = HorizontalAlign.Left;
RadGrid1.ShowFooter = true;
RadGrid1.ShowHeader = true;
RadGrid1.ShowStatusBar = true;
RadGrid1.AllowSorting = true;
RadGrid1.Visible = true;
this.RadGrid1.DataSource = this.GetData();
this.RadGrid1.DataBind();
}
private DataSet GetData()
{
SqlConnection sqlConnection = new SqlConnection();
SqlCommand sqlCommand = new SqlCommand();
SqlParameter sqlParameter = new SqlParameter();
DataSet dataSet = new DataSet();
try
{
if (sqlConnection.State != ConnectionState.Open)
{
sqlConnection.ConnectionString = SqlConnectionString.GetConnectionString();
sqlConnection.Open();
}
sqlCommand.Connection = sqlConnection;
sqlCommand.CommandType = CommandType.StoredProcedure;
sqlCommand.CommandText = ApplicationStoredProcedures.GetCountries();
sqlCommand.Parameters.Add("@WebPageName", SqlDbType.NVarChar).Value = "Authors.aspx";
sqlCommand.Parameters.Add("@CultureCode", SqlDbType.NVarChar).Value = "en-US";
sqlCommand.Parameters.Add("@ControlName", SqlDbType.NVarChar).Value = "ddlCountry";
sqlCommand.ExecuteNonQuery();
SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(sqlCommand);
sqlDataAdapter.Fill(dataSet);
return dataSet;
}
catch (SqlException sql)
{
throw sql;
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (sqlConnection.State != ConnectionState.Closed)
{
sqlConnection.Close();
}
sqlCommand.Dispose();
}
}
public void RadGrid1_PageIndexChanged(object source, Telerik.Web.UI.GridPageChangedEventArgs e)
{
this.RadGrid1.CurrentPageIndex = e.NewPageIndex;
}
/// <summary>
/// You can get the exact numbers of rows in your RadGrid either directly from the DataSource or in the following manner in the ItemDataBound event:
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
if (e.Item is GridPagerItem)
{
Label1.Text = (e.Item as GridPagerItem).Paging.DataSourceCount.ToString();
}
}
protected void RadGrid1_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
{
// RadGrid1.DataSource = this.GetData() ;
}
I cannot find the issue. Am I doing something wrong.
1 Answer, 1 is accepted
The reason for this behavior is that you create 2 columns and add them to MasterTableView's Columns collection on each postback. I suggest that you move the columns creation in Page_Init or in Page_Load in if (!IsPostBack) block. You can find more details here.
Kind regards,
Ves
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center