How to Use ASP.NET Web Forms GridView for Sorting and Paging?

1. Start by making a page in your application called YourPage.aspx
To implement paging and sorting in an ASP.NET GridView, you must do the following actions:

  1. Sort and Page: Sorting and paging can be made available by setting the AllowSorting and AllowPaging attributes to True.
  2. Set Page Size: You can specify how many records are shown on each page by using the PageSize property.
    Handle Sorting and Paging Events: In order to control the sorting and paging functionality, you must handle the Sorting and PageIndexChanging events.
  3. Bind Data: To keep sorting and paging in place, make sure the GridView is tied to a data source on each postback.

Sample Programming

This is a comprehensive illustration of an ASP.NET GridView with paging and sorting turned on:

2. Now In Your YourPage.cs Page Add Method Of Sorting And Paging

Key Points of Sorting and Paging in Code-Behind

Sorting Event Handler (MDetails_Sorting)

  • Event Trigger: This method is triggered when a column header is clicked to sort the GridView.
  • Retrieve Data: Retrieve the data from ViewState.
  • Sort Data: Sort the data based on the clicked column (e., SortExpression) and the sort direction.
  • Rebind Data: Binds the sorted data back to the GridView.

2. Paging Event Handler (MDetails_PageIndexChanging)

  • Event Trigger: This method is triggered when a different page is selected in the GridView.
  • Set Page Index: Updates the PageIndex of the GridView to the new page index.
  • Rebind Data: Calls BindGridView() to rebind the data and refresh the GridView with the new page.

3. Get Sort Direction (GetSortDirection)

  • Purpose: Determines the sort direction (ascending or descending) based on the current column.
  • State Management: Uses ViewState to store and retrieve the current sort direction and expression.

4. Bind Data (BindGridView)

    • Purpose: Binds the GridView with data.
    • Data Retrieval: Calls GetFamilyDetails() to fetch the data.
    • State Management: Stores the data in ViewState for later use (sorting, paging).
    • Bind Data: Binds the data to the GridView control.

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