WebPart
Backend List
Note:-
- Sample Category is the Parent List.
- RBL Sample is the child list which is using Lookup.
- SampleCategory is the Lookup column Name in the Child List.
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Ascx
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<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>
<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14.0.0.0,
Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint,
Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"
%>
<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint,
Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"
%>
<%@ Register Tagprefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=3.5.0.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint,
Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"
%>
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TestRbListLookUpUserControl.ascx.cs" Inherits="TestRbListLookUp.TestRbListLookUp.TestRbListLookUpUserControl"
%>
<table align="center">
<tr>
<td>
Enter Title
</td>
<td>
<asp:TextBox ID="txtTitle" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
Select Option
</td>
<td>
<asp:RadioButtonList ID="rblCategory" RepeatColumns="3" runat="server" DataValueField="ID" DataTextField="Title"></asp:RadioButtonList>
</td>
</tr>
<tr><td colspan="2" align="center"><asp:Button ID="btnsave"
runat="server"
Text="Save" onclick="btnsave_Click" /> <asp:Button ID="btnSearch"
runat="server" Text="Search" onclick="btnSearch_Click" /> <asp:Button
ID="btnUpdate" runat="server" Text="Update" onclick="btnUpdate_Click" /></td></tr>
<tr><td colspan="2" align="center"><asp:Label ID="lblMessage"
runat="server"></asp:Label> </td></tr>
</table>
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Ascx.cs
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using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using
System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
using System.Security;
namespace
TestRbListLookUp.TestRbListLookUp
{
public partial class TestRbListLookUpUserControl : UserControl
{
protected
void Page_Load(object
sender, EventArgs e)
{
if
(!IsPostBack)
{
BindRadioButtonList();
}
}
protected
void btnsave_Click(object
sender, EventArgs e)
{
try
{
SPWeb
currentWeb = SPContext.Current.Web;
SPList
lst = currentWeb.Lists["RBL Sample"];
SPListItemCollection
myColl = lst.Items;
SPListItem
item = myColl.Add();
item["Title"]
= txtTitle.Text;
item["SampleCategory"]
= rblCategory.SelectedValue.ToString();
item.Update();
txtTitle.Text = "";
rblCategory.ClearSelection();
lblMessage.Text = "Insertion Successful";
}
catch
(Exception Ex)
{
lblMessage.Text =
Ex.ToString();
}
}
protected
void btnSearch_Click(object
sender, EventArgs e)
{
try
{
SPWeb
currentWeb = SPContext.Current.Web;
SPList
lst = currentWeb.Lists["RBL Sample"];
SPQuery
sQuery = new SPQuery();
sQuery.Query = "<Where><Eq><FieldRef Name='Title'
/><Value Type='Text'>"+txtTitle.Text.ToLower()+"</Value></Eq></Where>";
SPListItemCollection
myColl = lst.GetItems(sQuery);
if
(myColl.Count > 0)
{
SPListItem
item = myColl[0];
SPFieldLookupValue
value = new SPFieldLookupValue(item["SampleCategory"].ToString());
foreach
(ListItem oItem in
rblCategory.Items)
{
int i = int.Parse(oItem.Value.ToString());
int j = int.Parse(value.LookupId.ToString());
if (i == j)
{
oItem.Selected = true;
break;
}
}
}
}
catch
(Exception Ex)
{
lblMessage.Text =
Ex.ToString();
}
}
protected
void btnUpdate_Click(object
sender, EventArgs e)
{
try
{
SPWeb
currentWeb = SPContext.Current.Web;
SPList
lst = currentWeb.Lists["RBL Sample"];
SPListItemCollection
myColl = lst.Items;
foreach
(SPListItem item in
myColl)
{
if
(item["Title"].ToString() ==
txtTitle.Text)
{
item["SampleCategory"] =
rblCategory.SelectedValue.ToString();
}
item.Update();
break;
}
txtTitle.Text = "";
rblCategory.ClearSelection();
lblMessage.Text = "Updation Successful";
}
catch
(Exception Ex)
{
lblMessage.Text =
Ex.ToString();
}
}
public
void BindRadioButtonList()
{
try
{
SPWeb
currentWeb = SPContext.Current.Web;
SPList
lst = currentWeb.Lists["Sample
Category"];
SPQuery
sQuery = new SPQuery();
sQuery.Query = "<OrderBy><FieldRef Name='ID'
/></OrderBy>";
SPListItemCollection
myColl = lst.GetItems(sQuery);
if
(myColl.Count > 0)
{
rblCategory.DataSource =
myColl.GetDataTable();
rblCategory.DataBind();
}
}
catch
(Exception Ex)
{
lblMessage.Text =
Ex.ToString();
}
}
}
}
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