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unable to get new values from rad grid on update

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

Mubasshar asked on 04 Jul 2011, 07:50 AM

Dear Team

i tried almost all the ways which i could find on internet but still unable to get the updated values from bound grid column.

plz check out my code lines.

aspx coding

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="frmViewUnitMaster.aspx.vb" Inherits="iTourism.WebForm1" %>

<%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title></title>

</head>

<body>

<form id="form1" runat="server" >

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

</telerik:RadScriptManager>

<div>

<table style="width:100%;">

<tr>

<td>

</td>

<td>

<asp:Button ID="btnAdd" runat="server" Text="Add" Width="69px" />

<asp:Label ID="lblMessage" runat="server" Text="Label"></asp:Label>

</td>

<td>

</td>

</tr>

<tr>

<td>

</td>

<td>

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

<AjaxSettings>

<telerik:AjaxSetting AjaxControlID="UMGrid">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="UMGrid" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<telerik:RadGrid ID="UMGrid" runat="server" AutoGenerateColumns="False" GridLines="None"

AllowFilteringByColumn="True" AllowSorting="True" AutoGenerateEditColumn="True"

AllowPaging="True" Width="60%" ViewStateMode="Enabled" CellPadding="10"

CellSpacing="10" onupdatecommand="UMGrid_UpdateCommand" >

<ClientSettings>

<Selecting AllowRowSelect="True" />

<Scrolling AllowScroll="True" />

<Selecting AllowRowSelect="True"></Selecting>

</ClientSettings>

<MasterTableView EditMode="EditForms" DataKeyNames="UnitCode">

<Columns>

<telerik:GridBoundColumn DefaultInsertValue="" UniqueName="UnitCode"

HeaderText="UnitCode" DataField="UnitCode" ReadOnly="True">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DefaultInsertValue="" UniqueName="UnitDesc"

HeaderText ="Unit Description" DataField="Description" >

</telerik:GridBoundColumn>

</Columns>

<EditFormSettings EditFormType="AutoGenerated" >

</EditFormSettings>

</MasterTableView>

</telerik:RadGrid>

</td>

<td>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

vb Code

Imports System

Imports System.Data

Imports Telerik.Web.UI

Imports System.Data.SqlClient

Public Class WebForm1

Inherits System.Web.UI.Page

Dim objclsUnitMaster As New clsUnitMaster

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

UMGrid.AutoGenerateDeleteColumn = True

UMGrid.AutoGenerateEditColumn = True

UMGrid.DataSource = (objclsUnitMaster.GetUnitCodeList).Tables("UnitMaster")

UMGrid.DataBind()

End Sub

Protected Sub btnAdd_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnAdd.Click

Response.Redirect("frmUnitMaster.aspx")

End Sub

Private Sub UMGrid_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles UMGrid.ItemCommand

If (e.CommandName = RadGrid.UpdateCommandName) Then

Dim editedItem As GridEditableItem = CType(e.Item, GridEditableItem)

Dim newValues As New Hashtable

e.Item.OwnerTableView.ExtractValuesFromItem(newValues, editedItem)

'not getting the updated value

lblMessage.Text = newValues("Description").ToString

End If

End Sub

Private Sub UMGrid_NeedDataSource(ByVal source As Object, ByVal e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Handles UMGrid.NeedDataSource

UMGrid.DataSource = (objclsUnitMaster.GetUnitCodeList).Tables("UnitMaster")

UMGrid.DataBind()

End Sub

Public Sub UMGrid_UpdateCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles UMGrid.UpdateCommand

' Dim editedItem As GridEditableItem = CType(e.Item, GridEditableItem)

'Dim MyUserControl As UserControl = CType(e.Item.FindControl(GridEditFormItem.EditFormUserControlID), UserControl)

Dim _UnitCode As Integer = 0

Dim _Description As String = ""

Dim _Result As Long = 0

Dim _item As GridEditableItem

_item = e.Item

Try

_UnitCode = Convert.ToInt32(DirectCast(_item("UnitCode"

).Controls(0), TextBox).Text)

 'Unable to Get Updated Value using this also

_Description = DirectCast(_item("Description").Controls(0), TextBox).Text

_Result = objclsUnitMaster.UpdateUnitByCode(_UnitCode, _Description)

If _Result = 0 Then

lblMessage.Text = "Record Saved Successfully"

Else

lblMessage.Text = "Error While Saving Record" & " - " & _Result

End If

'UMGrid.Rebind()

Catch ex As Exception

lblMessage.Text = ex.Message

End Try

End Sub

End Class

if any body can help me regarding this .

3 Answers, 1 is accepted

answered on 07 Jul 2011, 02:48 PM

get-the-update-value.zip

Hi Mubasshar,

I am sending you a simple working project, which demonstrates how you can get the original value and the updated value. Give it a try and let me know if it works for you.

All the best,
Pavlina
the Telerik team

Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!

answered on 02 Aug 2017, 06:16 AM

Hello Kenneth,

I've already responded to your query in your formal support ticket. I suggest that we continue our technical conversation on the mentioned thread.

In addition, I will also post the reply here so other developers with similar issues can see it as well:

Please make sure you are not using DataBind() method to bind the grid. Performing complex grid operations such as Inserting, Deleting, Updating, Hierarchy relations, Grouping, Exporting, Paging, Sorting, Filtering, etc. require accommodating appropriate database operations. Therefore, we suggest you to avoid Simple Databinding and strongly recommend the use of more advanced databinding methods, which automatically handle the aforementioned functions:

Declarative DataSource (DataSourceID property)
Programmatic Data Binding (NeedDataSource event, + DetailTableDataBind for hierarchy). You should set the DataSource property ONLY within these event handlers.

As for outside button, you can use:
http://www.telerik.com/forums/how-to-fire-the-updateedited-method-from-an-outside-button#5Af7aU0fFEa0UKS5HOhyjA

Regards,
Eyup
Progress Telerik

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