How to find the data key on CheckedChanged event of checkbox in ListView in ASP.NET?
12,162
Solution 1
Check this out : may help to resolve your issue of geting datakey
protected void chkFocusArea_CheckedChanged(object sender, EventArgs e)
{
CheckBox cb = (CheckBox)sender;
ListViewItem item = (ListViewItem)cb.NamingContainer;
ListViewDataItem dataItem = (ListViewDataItem)item ;
string code = ListView1.DataKeys[dataItem.DisplayIndex].Value.ToString();
}
Solution 2
Use Data Binding Expression
<asp:CheckBox ID="chkFocusArea" runat="server" Checked='<%# Eval("[COLUMN]") %>' oncheckedchanged="chkFocusArea_CheckedChanged" AutoPostBack="true" />
In your chkFocusArea_CheckedChanged event handler, perform your database insertion and rebind the data.
Author by
Subbu
*Coldfusion web developer and application software progammer *
Updated on June 16, 2022Comments
-
Subbu almost 2 years
I am using a list view inside that in item template i am using a label and a checkbox. I want that whenever user clicks on the check box the value should be updated in a table.i am using a datakeys in listview.on the basis of datakey value should be updated in the table. Query is:
string updateQuery = "UPDATE [TABLE] SET [COLUMN] = " + Convert.ToInt32(chk.Checked) + " WHERE PK_ID =" + dataKey + " ";`
also i want some help in displaying the result as it is inside the table.means if the value for column in table for a particular pkid is 1 then the checkbox shoul be checked.
Here is the code snippet:
<asp:ListView ID="lvFocusArea" runat="server" DataKeyNames="PK_ID" OnItemDataBound="lvFocusArea_ItemDataBound"> <LayoutTemplate> <table border="0" cellpadding="1" width="400px"> <tr style="background-color: #E5E5FE"> <th align="left"> Focus Area </th> <th> Is Current Focused </th> </tr> <tr id="itemPlaceholder" runat="server"> </tr> </table> </LayoutTemplate> <ItemTemplate> <tr> <td width="80%"> <asp:Label ID="lblFocusArea" runat="server" Text=""><%#Eval("FOCUS_AREA_NAME") %></asp:Label> </td> <td align="center" width="20%"> <asp:CheckBox ID="chkFocusArea" runat="server" OnCheckedChanged="chkFocusArea_CheckedChanged" AutoPostBack="true" /> </td> </tr> </ItemTemplate> <AlternatingItemTemplate> <tr style="background-color: #EFEFEF"> <td> <asp:Label ID="lblFocusArea" runat="server" Text=""><%#Eval("FOCUS_AREA_NAME") %></asp:Label> </td> <td align="center"> <asp:CheckBox ID="chkFocusArea" runat="server" OnCheckedChanged="chkFocusArea_CheckedChanged" AutoPostBack="true" /> </td> </tr> </AlternatingItemTemplate> <SelectedItemTemplate> <td> item selected </td> </SelectedItemTemplate> </asp:ListView>
Help me.