IntroductionToday, 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="CurrencyWebPartUserControl.ascx.cs"Inherits="CurrencyList.CurrencyWebPart.CurrencyWebPartUserControl" %><div style="text-align: center;"> <table> <tr> <td colspan="2"> <asp:Label ID="Label9" 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="Label10" runat="server" Text="Please Enter First Column Name" Font-Size="Large" Font-Names="Verdana" Font-Italic="true"></asp:Label> </td> <td> <asp:TextBox ID="TextBox7" runat="server"></asp:TextBox> </td> </tr> <tr> <td> <asp:Label ID="Label11" runat="server" Text="Please Enter Second Column Name" Font-Size="Large" Font-Names="Verdana" Font-Italic="true"></asp:Label> </td> <td> <asp:TextBox ID="TextBox8" runat="server"></asp:TextBox> </td> </tr> <tr> <td> <asp:Label ID="Label12" 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="TextBox9" runat="server"></asp:TextBox> </td> </tr> <tr> <td> <asp:Label ID="Label8" runat="server" Text="Please Enter Fourth Currency Column Name" Font-Size="Large" Font-Names="Verdana" Font-Italic="true"></asp:Label> </td> <td> <asp:TextBox ID="TextBox10" 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="Label14" 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="TextBox11" runat="server"></asp:TextBox> </td> </tr> <tr> <td> <asp:Label ID="Label15" 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="TextBox12" runat="server"></asp:TextBox> </td> </tr> </table> <br /> <br /> </div> </fieldset> </td> </tr> <tr> <td colspan="2"> <asp:Button ID="Button1" 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="Label16" 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;using WebApplication1; namespace CurrencyList.CurrencyWebPart{ public partial class CurrencyWebPartUserControl : 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); 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(); SPFieldCurrency currencyField = (SPFieldCurrency)list.Fields.GetFieldByInternalName (list.Fields.Add(TextBox6.Text, SPFieldType.Currency, true)); currencyField.Currency = SPCurrencyFieldFormats.India; currencyField.DisplayFormat = SPNumberFormatTypes.TwoDecimals;
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