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Delete selected row(s) from RadToolBar Ajaxified

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Grid

This is a migrated thread and some comments may be shown as answers.

Mattias Moberg asked on 12 Oct 2011, 08:23 PM

Hi.
I´m facing scenario that i do not understand, and can not solve.

In RadToolBar1 I´ve added:
<telerik:RadToolBarButton Text="Delete" CommandName="DeletePost" PostBack="false" ImageUrl="Themes/Default/Icons/Telerik/Delete.png"></telerik:RadToolBarButton>

In RadGrid1 I´ve added:
<telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" CommandName="SelectPost" HeaderStyle-Width="40px" />

When client press button in RadToolBar1 with CommandName="DeletePost" , I want to run my server-side code that will delete selected row(s) from db. Ajaxified.

Markup:

<%@ Page Title="" Language="C#" MasterPageFile="App_master/MasterPage.master" AutoEventWireup="true"

CodeFile="Posts.aspx.cs" Inherits="ccc_Posts" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">

<telerik:RadAjaxManager runat="server" ID="RadAjaxManager1" OnAjaxRequest="RadAjaxManager1_AjaxRequest">

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="RadAjaxManager1">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadGrid1" />

<telerik:AjaxUpdatedControl ControlID="RadToolBar1" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="RadToolBar1">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="RadGrid1" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1">

</telerik:RadAjaxLoadingPanel>

<telerik:RadTreeView runat="Server" ID="RadTreeView1" EnableViewState="False" Style="margin-top: 4px;

margin-left: 4px;">

</telerik:RadTreeView>

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" runat="Server">

<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">

<script type="text/javascript">

var toolbar;

var grid;

function pageLoad() {

grid = $find("<%=RadGrid1.ClientID %>");

toolbar = $find("<%= RadToolBar1.ClientID %>");

if (grid.get_masterTableView().get_selectedItems().length == 0)

toolbar.findButtonByCommandName("DeletePost").disable();

}

function onGridRowSelected(sender, args) {

toolbar.findButtonByCommandName("DeletePost").enable();

}

// Open window

function OpenWindow(url) {

radopen(url, "NewPost");

}

function OnClientButtonClickingHandler(sender, eventArgs) {

if (eventArgs.get_item().get_value() == "NewPost") {

OpenWindow('NewPost.aspx');

}

</script>

</telerik:RadScriptBlock>

<telerik:RadWindowManager ID="RadWindowManager1" runat="server" Modal="true" Width="1024px"

OnClientClose="closeRadWindow" Behaviors="Close, Reload, Resize, Move, Maximize"

Height="710px" ViewStateMode="Disabled" ShowContentDuringLoad="false" VisibleStatusbar="false">

</telerik:RadWindowManager>

<telerik:RadSplitter runat="server" ID="RadSplitter1" Width="100%" BorderSize="0"

BorderStyle="None" PanesBorderSize="0" Height="100%" Orientation="Horizontal">

<telerik:RadPane runat="server" ID="RadPane1" Height="30px" EnableViewState="false"

Scrollable="false">

<telerik:RadToolBar runat="server" ID="RadToolBar1" EnableViewState="false" CssClass="inbox-search-toolbar"

OnClientButtonClicking="OnClientButtonClickingHandler" OnButtonClick="RadToolBar1_ButtonClick">

<Items>

<telerik:RadToolBarButton Text="New Post" Value="NewPost" PostBack="false" ImageUrl="Themes/Default/Icons/Telerik/Add.png">

</telerik:RadToolBarButton>

<telerik:RadToolBarButton IsSeparator="true" />

<telerik:RadToolBarButton Text="Delete" CommandName="DeletePost" PostBack="false" ImageUrl="Themes/Default/Icons/Telerik/Delete.png">

</telerik:RadToolBarButton>

<telerik:RadToolBarButton IsSeparator="true" />

<telerik:RadToolBarButton Value="searchTextBoxButton">

<ItemTemplate>

<telerik:RadTextBox runat="server" ID="blogToolBarSearchTb" EmptyMessage="Search Posts"

CssClass="inbox-search-textbox" Width="300px" />

</ItemTemplate>

</telerik:RadToolBarButton>

<telerik:RadToolBarButton ImageUrl="Themes/Default/Icons/16x16/search.png" Value="search" />

</Items>

</telerik:RadToolBar>

</telerik:RadPane>

<telerik:RadPane runat="server" ID="RadPane2">

<telerik:RadGrid runat="server" ID="RadGrid1" AutoGenerateColumns="false" GridLines="None"

AllowMultiRowSelection="true" Height="100%" BorderWidth="0px" AllowSorting="True"

Style="outline: none" ShowGroupPanel="True">

<ClientSettings Scrolling-AllowScroll="True" Scrolling-UseStaticHeaders="true" Selecting-AllowRowSelect="true"

EnablePostBackOnRowClick="false" AllowDragToGroup="true" EnableRowHoverStyle="true"

ClientEvents-OnRowSelected="onGridRowSelected">

</ClientSettings>

<MasterTableView TableLayout="Fixed" GroupLoadMode="Client" Width="100%">

<Columns>

<telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" CommandName="SelectPost"

HeaderStyle-Width="40px" />

<telerik:GridTemplateColumn HeaderText="Title" UniqueName="BlogTitle" Groupable="false"

HeaderStyle-Width="100%">

<ItemTemplate>

<a href="#"><b>

<%# Eval("Title")%></b></a>

<div style="margin: 4px 0px;">

<asp:ImageButton ID="statusBtn" runat="server" ImageUrl="~/Themes/Default/Icons/16x16/finished-work2.png"

Style="vertical-align: middle;" />

<span style="vertical-align: middle; margin-left: 2px;">Status:</span>

</div>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Action" UniqueName="BlogAction" HeaderStyle-Width="110px"

Groupable="false">

<ItemTemplate>

<div style="margin: 4px 0px;">

<asp:ImageButton ID="actionBtn" runat="server" ImageUrl="~/Themes/Default/Icons/16x16/edit.png"

Style="vertical-align: middle;" />

<span style="vertical-align: middle; margin-left: 2px;"><a href="javascript:OpenWindow('NewPost.aspx?id=<%# Eval("BlogPostId")%>')">

Edit</a></span>

</div>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Comments" UniqueName="BlogComments" HeaderStyle-Width="85px"

Groupable="false">

<ItemTemplate>

<div style="margin: 4px 0px;">

<span style="vertical-align: middle; margin-left: 2px;">(num)</span>

</div>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="User" UniqueName="BlogUserName" HeaderStyle-Width="170px"

GroupByExpression="Username Group by Username">

<ItemTemplate>

<div style="margin: 4px 0px;">

<span style="vertical-align: middle; margin-left: 2px;">

<%# Eval("Username")%></span>

</div>

</ItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridTemplateColumn HeaderText="Blog Date" UniqueName="BlogDate" HeaderStyle-Width="150px"

GroupByExpression="BlogDate Group by BlogDate">

<ItemTemplate>

<div style="margin: 4px 0px;">

<span style="vertical-align: middle; margin-left: 2px;">

<%# Eval("BlogDate")%></span>

</div>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

</MasterTableView>

</telerik:RadGrid>

</telerik:RadPane>

</telerik:RadSplitter>

<script type="text/javascript">

function closeRadWindow() {

$find("<%= RadAjaxManager1.ClientID %>").ajaxRequest();

}

</script>

</asp:Content>

Code:

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using CSSUtilityLib;

using CSSUtilityLib.Configuration;

using CSSUtilityLib.Cookie;

using CSSUtilityLib.DataAccess;

using CSSUtilityLib.Email;

using CSSUtilityLib.Process;

using CSSUtilityLib.Security;

using CSSUtilityLib.Transfer;

using CSSUtilityLib.Validation;

using System.Data;

using System.Data.SqlClient;

using Telerik.Web.UI;

public partial class ccc_Posts : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

// code layer for testing purpose

string connStr = ConfigManager.GetConnStr("CSSBlogDB");

DataSet ds0 = SqlServerDataAccessHelper.ExecuteDataSet(connStr, CommandType.StoredProcedure, "SelectAllBlogPost");

RadGrid1.DataSource = ds0;

RadGrid1.DataBind();

}

protected void RadToolBar1_ButtonClick(object sender, Telerik.Web.UI.RadToolBarEventArgs e)

{

string sCommand = e.Item.Text;

switch (sCommand)

{

case "Delete":

// Code here..

break;

}

protected void RadAjaxManager1_AjaxRequest(object sender, AjaxRequestEventArgs e)

{

RadGrid1.Rebind();

}

1 Answer, 1 is accepted

answered on 17 Oct 2011, 04:03 AM

Hello Mattias,

In order to achieve your goal, I suggest that you first revise the grid binding. Using simple data-binding as in your case will reset the selected grid items on each postback. You would better implement the advanced data-binding. From then on, to achieve your goal, you can handle the selected items deletion by looping through the grid SelectedItems/SelectedIndexes.

Find more information in the below resources:
http://www.telerik.com/help/aspnet-ajax/grid-simple-data-binding.html
http://www.telerik.com/help/aspnet-ajax/grid-advanced-data-binding.html
http://www.telerik.com/help/aspnet-ajax/grid-accessing-cells-and-rows.html
http://www.telerik.com/help/aspnet-ajax/grid-using-getitems-getcolumn-methods.html
http://www.telerik.com/help/aspnet-ajax/grid-retrieve-primary-key-field-values-for-items.html
http://demos.telerik.com/aspnet-ajax/grid/examples/programming/commanditem/defaultcs.aspx

Give it a try and let me know how it goes.

Greetings,
Iana Tsolova
the Telerik team

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