Create Custom Field Validation in SharePoint 2010 Programmatically Using VS 2012

Introduction

Today, in this article let's play around with one of the interesting and most useful concepts in SharePoint 2010.

Question: What is Custom Field Validation?

In simple terms "It enables to specify validation levels where the user is restricted to enter accurate information with context to a specific requirement".

Step 1: Open SharePoint 2010 Central Administration and navigate to a specific site.

Step 2: Open up Visual Studio 2012 and try to select a SharePoint visualwebpart project.

Step 3: Select "Deploy as a farm solution" as in the following and click on the "Finish" button.

Step 4: 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="VisualWebPart1.ascx.cs"

Inherits="FieldValidApp.VisualWebPart1.VisualWebPart1"%>

<div>

<tablestyle="text-align: center">

<tr>

<tdcolspan="2">

<asp:labelid="Label1"runat="server"text="Custom Field Validation - SharePoint 2010 Programatically"

font-bold="true"font-size="Large"font-names="Verdana"forecolor="Maroon"></asp:label>

</td>

</tr>

<tr>

<tdcolspan="2">

<br/>

<asp:buttonid="Button1"runat="server"text="Custom Field Validation" font-names="Verdana"

width="282px"backcolor="Orange"font-bold="True"onclick="Button1_Click"/>

</td>

</tr>

<tr>

<tdcolspan="2">

<br/>

<asp:labelid="Label5"runat="server"font-bold="true"font-names="Verdana"></asp:label>

</td>

</tr>

</table>

</div>

</center>

Step 5: The complete code of visualwebpart1usercontrol.ascx.cs looks like this:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Microsoft.SharePoint;

using System;

using System.ComponentModel;

using System.Web.UI.WebControls.WebParts;namespace FieldValidApp.VisualWebPart1

{

[

ToolboxItemAttribute(false)]publicpartial classVisualWebPart1 : WebPart

{

// Uncomment the following SecurityPermission attribute only when doing Performance Profiling using

// the Instrumentation method, and then remove the SecurityPermission attribute when the code is ready

// for production. Because the SecurityPermission attribute bypasses the security check for callers of

// your constructor, it's not recommended for production purposes.

// [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Assert, UnmanagedCode = true)

]

public VisualWebPart1()

{

}

protected override void OnInit(EventArgs e)

{

base.OnInit(e);InitializeControl();

protected void Page_Load(object sender,EventArgs e)

{

}

protected void Button1_Click(object sender,EventArgs e)

{

try{SPWeb web = SPContext.Current.Web;

SPList list = web.Lists["Student"];

var field = list.Fields.GetField("Age");

field.ValidationFormula = "[Age]>= 18";

field.ValidationMessage = "Age Must Be Greater or Equal to 18 To Work Here";

Label5.Text = "Custom Field Validation Enabled";

Label5.ForeColor = System.Drawing.Color.Green;field.Update();

}

catch (SPFieldValidationException ex)

{

Label5.Text = ex.Message;

}

Step 6: Deploy the solution file and add the created webpart to the SharePoint site.

Step 7: The output of the application looks like this:

Step 8: Data entering validation output of the application looks like this:

Create Custom Field Validation in SharePoint 2010 Programmatically Using VS 2012

Reactions

Comments