Contents
How to update and delete data in web form?
In the code-behind file, add a using statement for System.Data.Entity.Infrastructure. Then, add the following update and delete methods. The TryUpdateModel method applies the matching data-bound values from the web form to the data item. The data item is retrieved based on the value of the id parameter.
Is it time to update that ASP.NET Web Forms project?
When you think about building a new application or updating an existing one into a more modern technology, it’s usually a good idea to jump in fairly close to the cutting edge. Technology moves so fast these days that jumping in very far back will often result in earlier obsolescence.
How to create an Ajax UpdatePanel in ASP.NET?
Create a new ASP.NET page with a ScriptManager object set to enable partial rendering. Add two UpdatePanels to this page – in the first, include a Label control ( Label1 ) and two Button controls ( Button1 and Button2 ). Button1 should say Click to Update Both and Button2 should say Click to Update This, or something along those lines.
How to add dynamic controls to web forms?
From the Manage NuGet Packages, install the DynamicDataTemplatesCS. Notice that your project now includes a folder named DynamicData. In that folder, you will find the templates that are automatically applied to dynamic controls in your web forms.
How to update and delete data in model binding?
Run the web application, and update and delete any of the records. Notice that when in the edit mode the value for the Year property is automatically rendered as a drop down list. The Year property is an enumeration value, and the dynamic data template for an enumeration value specifies a drop down list for editing.
How to enable updating, deleting and creating data?
Run the web application and create a new student. Click Insert and notice the new student has been created. In this tutorial, you enabled updating, deleting, and creating data. You ensured validation rules are applied when interacting with the data. In the next tutorial in this series, you will enable sorting, paging, and filtering data.
How to update and delete records in a database?
Enabling users to update and delete records in the database is very similar to the process for retrieving data. In the UpdateMethod and DeleteMethod properties, you specify the names of the methods that perform those operations.