Create Templatefields in a GridView control

We use TemplateFields when we wish to display ASP.Net controls in a GridView column. We display ASP.Net controls in a GridView column to provide additional functionality in the user interface. For example, by placing a DropDownList control in a GridView column, users will be able to select a list of options from within the Gridview control interface. Other examples of providing more functionality to the GridView interface are placing Checkboxes, Labels, Textboxes and Validation controls. A Template field supports many types of templates and a list of template types is given in the table below.

TemplateType Description
AlternatingItemTemplate The contents of this template are displayed for every other row rendered by the GridView
EditItemTemplate The contents of this template are displayed when a row is selected for editing
FooterTemplate The contents of this template are displayed in the column footer
HeaderTemplate The contents of this template are displayed in the column header
InsertTemplate The contents of this template are displayed when a new data item is inserted
ItemTemplate The contents of this template are displayed for every row rendered by the GridView

We can create TemplateFields in the GridView control using <TemplateField> element.

Steps to create the <TemplateField> element in the GridView control

a. Declare the GridView and set the AutoGenerateColumns property to 'false'.
b. Create a Template column using <asp:TemplateField> tag within the <Columns> element.
c. Create <ItemTemplate> within the <asp:TemplateField> element to display value of field as text.
d. Create <EditItemTemplate> to display TextBox control to modify value of field when editing the record.

<asp:GridView ID="GridView1"  DataSourceId="MyDataSource"  DataKeyNames="Code"
AutoGenerateColumns="false"       AutoGenerateEditButton="true"
AutoGenerateDeleteButton="true"   runat="server">
<asp:TemplateField  HeaderText="Name">
<asp:TextBox ID="txtName" Text="<%# Bind("Name")%>" runat="server" />
<asp:TemplateField  HeaderText="Description">
<asp:TextBox ID="txtDesctiption"	Text="<%# Bind("Description")%>"  runat="server" />

<asp:SqlDataSource ID="MyDataSource" 
SelectCommand="SELECT * FROM Sample"
UpdateCommand="Update SAMPLE SET Name=@Name,Description=@Description Where Code=@Code"
DeleteCommand="Delete SAMPLE Where Code=@Code" runat="server"/>

Configure the SqlDataSource control and set the SelectCommand and UpdateCommand properties to display and update records from the Sample Table.

Observe that we have created two Template fields the GridView control. The first TemplateField is used to display and edit the value of the 'Name' field in the SAMPLE table. The second TemplateField is used to display and edit the value of the 'Description' field in the SAMPLE table. The contents of the ItemTemplate are displayed when a row is in normal mode and the contents of the EditItemTemplate are displayed when a row is in edit mode.

cover image of azure cloud book

Develop Azure Applications

Azure Cloud is gaining popularity and is competing with Amazon Elastic Cloud and Google Cloud for a spot in the billion dollar Cloud computing space.

With this book learn how to use - Table (an Azure Table is different from a SQL Server Table), Queue, Blob storage services, use your local machine to create an Application and a Service, how Azure splits a Table to achieve Load Balancing, Scalability based on the Partition Key, AppFabric Service Bus, Access Control Service, role of Fabric Controller, features of Azure SQL Database and Content Delivery Network.

Many have mastered Cloud Programming and are enjoying the benefits. Why not you?

View Highlights » View Contents »
cover image of foundation database programming book

Create your Own Accounting Software

A foundation book to Master Accounting Software Development, VB.Net, C# and OOPs programming. Detailed explanation of the Accounting domain for programmers is included. SQL and ADO.Net is also covered in detail.

This book gives you a strong foundation in Application Development.

A thorough understanding of the contents will enable you to grasp the topics covered in the accompanying books quite easily. This is because, the accounting domain is dealt with great detail in this book.

The ideal book to get started with application development in the .Net world.

View Highlights » View Contents »

cover image of book

Create your Own WEB ERP Software using ASP.Net

This book opens you to the Web. Using ASP.Net, C# and SQL Server as the tools, you will learn to build a Multi Tier Web Application as recommended by Microsoft. You will learn implementing inline GridView control, Transaction Management for a layered Web Application, build Data Access component and a Business Layer component.

Opens you to a world of opportunities. You will be able to develop a Web ERP application including all the five modules and learn how to use the TreeView control and GridView control to implement transactions such as Purchase Invoice, Sales Order and Sales Invoice.

View Highlights »
cover image of entity framework book

ASP.Net MVC 5 Application Development Using Entity Framework 6 and VS 2015

Entity frameworks is the latest buzz in .Net programming and is the data access technology for Microsoft OS based hand held devices and web applications. Learn to integrate EF into an ASP.Net Application and MVC application. Create, explore and query the Entity Data Model. Learn how to use ObjectDataSource control and GridView control in an ASP.Net Application.

Also, learn to build Three-Tier ASP.Net application, create a business-class, implement methods in the class to perform CRUD operations and bind a GridView to the ObjectDataSource control. Learn how to handle concurrency and managing Transactions.

View Contents »