MutliLineText Field in SharePoint 2010 Programmatically Using VS 2010

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 list?

 

In simple terms "When you create a custom list, a new empty list is created with just two columns - Title and Attachments. The list contains a single default view. Once you create the list, you can add more columns, views, and so on".

 

I think we are now good to go and implement this wonderful concept.

 

Step 1: Create a custom list and modify the view.

 

Step 2: Open SharePoint 2010 Central Administration and navigate to a specific site.

 

Step 3: Open up Visual Studio 2010 and create an "Empty SharePoint project":

 

 

 

Step 4: Select "Deploy as a farm solution" and click on the "Finish" button. Now an empty project will be created:

 

 

 

Step 5: Add a new visual webpart for that project:

 

 

Step 6: 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="MultiLineWebPartUserControl.ascx.cs"

    Inherits="MultiLineList.MultiLineWebPart.MultiLineWebPartUserControl" %>

<div style="text-align: center;">

    <table>

        <tr>

            <td colspan="2">

                <asp:label id="Label1" runat="server" text="List Choice via Object Modelling - SharePoint 2010"

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

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label2" runat="server" text="Please Enter First Column Name" font-size="Large"

                    font-names="Verdana" font-italic="true"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox1" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label3" runat="server" text="Please Enter Second Column Name" font-size="Large"

                    font-names="Verdana" font-italic="true"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox2" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label4" runat="server" text="Please Enter Third Choice Column Name"

                    font-size="Large" font-names="Verdana" font-italic="true"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox3" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td>

                <asp:label id="Label8" runat="server" text="Please Enter Fourth Multi-Line Column Name"

                    font-size="Large" font-names="Verdana" font-italic="true"></asp:label>

            </td>

            <td>

                <asp:textbox id="TextBox6" runat="server"></asp:textbox>

            </td>

        </tr>

        <tr>

            <td colspan="2">

                <br />

                <br />

                <fieldset>

                    <legend style="font-family: Verdana; font-weight: bold; font-style: italic">Enter ChoiceList

                        Items</legend>

                    <br />

                    <div style="text-align: center;">

                        <table>

                            <tr>

                                <td>

                                    <asp:label id="Label6" runat="server" text="Please Enter First List Item Name " font-size="Large"

                                        font-names="Verdana" font-italic="true"></asp:label>

                                </td>

                                <td style="text-align: right">

                                    <asp:textbox id="TextBox4" runat="server"></asp:textbox>

                                </td>

                            </tr>

                            <tr>

                                <td>

                                    <asp:label id="Label7" runat="server" text="Please Enter Second List Item Name "

                                        font-size="Large" font-names="Verdana" font-italic="true"></asp:label>

                                </td>

                                <td style="text-align: right">

                                    <asp:textbox id="TextBox5" runat="server"></asp:textbox>

                                </td>

                            </tr>

                        </table>

                        <br />

                        <br />

                    </div>

                </fieldset>

            </td>

        </tr>

        <tr>

            <td colspan="2">

                <asp:button id="Button2" runat="server" text="Create List Fields" font-names="Verdana"

                    width="166px" backcolor="Orange" font-bold="True" onclick="Button2_Click" />

            </td>

        </tr>

        <tr>

            <td colspan="2">

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

            </td>

        </tr>

    </table>

</div>

 

Step 7: 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 MultiLineList.MultiLineWebPart

{

    public partial class MultiLineWebPartUserControl : UserControl

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            TextBox1.Focus();

        }

        protected void Button2_Click(object sender, EventArgs e)

        {

            if (string.IsNullOrEmpty(TextBox1.Text) || string.IsNullOrEmpty(TextBox2.Text) || string.IsNullOrEmpty(TextBox3.Text) || string.IsNullOrEmpty(TextBox4.Text) || string.IsNullOrEmpty(TextBox5.Text) || string.IsNullOrEmpty(TextBox6.Text))

            {

                Label5.Text = "Please Enter Some Values";

                Label5.ForeColor = System.Drawing.Color.Red;

            }

            else

            {

                SPSite site = SPContext.Current.Site;

                SPWeb web = site.OpenWeb();

                web.AllowUnsafeUpdates = true;

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

                SPListItem item = list.Items.Add();

                item.Fields.Add(TextBox1.Text, SPFieldType.Text, true);

                item.Fields.Add(TextBox2.Text, SPFieldType.Text, true);

                item.Fields.Add(TextBox6.Text, SPFieldType.Note, true);

                SPFieldChoice fieldChoice = (SPFieldChoice)list.Fields.GetFieldByInternalName(item.Fields.Add(TextBox3.Text, SPFieldType.Choice, true));

                string[] types =

                {

                    TextBox4.Text, TextBox5.Text };

                fieldChoice.Choices.AddRange(types);

                fieldChoice.Update();

                SPView view = list.DefaultView;

                view.ViewFields.Add(TextBox1.Text);

                view.ViewFields.Add(TextBox2.Text);

                view.ViewFields.Add(TextBox3.Text);

                view.ViewFields.Add(TextBox6.Text);

                view.Update();

                Label5.Text = "Fields Created Successfully";

                Label5.ForeColor = System.Drawing.Color.Green;

                TextBox1.Text = string.Empty;

                TextBox2.Text = string.Empty;

                TextBox3.Text = string.Empty;

                TextBox4.Text = string.Empty;

                TextBox5.Text = string.Empty;

                TextBox6.Text = string.Empty;

            }

        }

    }

}

Step 8: Deploy the solution file and add the created webpart to a SharePoint site.

 

Step 9: The output of the application looks like this:

 

 

 Step 10: MutliLine field entering output of the application looks like this:

 

 

 

Step 11: Data entering in list output of the application looks like this:

 

 

 

Step 12: Data entered in list output of the application looks like this:

 

I hope this article is useful for you.