Introduction
Today, in this article let's play around with one of the interesting and most useful concepts in SharePoint 2010.
Question: What is a Site column?
In simple terms "It is a specific column which can be used across any list or libraries for a site or subsites".
Step 1: Open SharePoint 2010 Central Administration and navigate to a specific site.
Step 2: Open Visual Studio 2010 and create an "Empty SharePoint project":
Step 3: Select "Deploy as a farm solution" and click the "Finish" button. Now an empty project will be created, as in:
Step 4: Add a new visual webpart for that project.
Step 5: The complete code of visualwebpart1usercontrol.ascx looks like this:
<%@ 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="SiteColumnWPUserControl.ascx.cs"
Inherits="SiteColumnApp.SiteColumnWP.SiteColumnWPUserControl" %>
<div align="center" style="font-family: Verdana; font-weight: bold">
<table>
<tr>
<td>
<asp:label id="Label1" runat="server" text="Please Enter Site Column Name: " forecolor="Brown"></asp:label>
</td>
<td>
<asp:textbox id="TextBox1" runat="server"></asp:textbox>
</td>
</tr>
<tr>
<td colspan="2">
<asp:button id="Button1" runat="server" text="Create Site Column" onclick="Button1_Click"
backcolor="Orange" />
</td>
</tr>
<tr>
<td colspan="2">
<asp:label id="Label2" runat="server"></asp:label>
</td>
</tr>
</table>
</div>
Step 6: The complete code of visualwebpart1usercontrol.ascx.cs looks like this:
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
namespace SiteColumnApp.SiteColumnWP
{
public partial class SiteColumnWPUserControl : UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(TextBox1.Text))
{
Label2.Text = "Please Enter Some Values.";
Label2.ForeColor = System.Drawing.Color.Red;
}
else
{
SPSite site = new SPSite("http://win-5d57sl2rvt1:6901/");
SPWeb web = site.OpenWeb();
string internal_Name = web.Fields.Add(TextBox1.Text, SPFieldType.Currency, true);
SPFieldCurrency currency = (SPFieldCurrency)web.Fields.GetFieldByInternalName(internal_Name);
currency.Currency = SPCurrencyFieldFormats.India;
currency.DisplayFormat = SPNumberFormatTypes.TwoDecimals;
currency.ValidationMessage = "Incorrect Currency";
currency.Update();
Label2.Text = TextBox1.Text + " - Site Column is successfully created.";
Label2.ForeColor = System.Drawing.Color.Green; TextBox1.Text = string.Empty;
}
}
}
}
Step 7: Deploy the solution file and add the created webpart to the SharePoint site:
Step 8: The output of the application looks like this:
Step 9: The Site column entering output of the application looks like this:
Step10: The Site column created output of the application looks like this:
I hope this article is useful for you.