Summary of pagination auxiliary classes under webform

1. engineering and project structure

In the DAL layer, we mainly control and implement data access through IBatisNet. If you are not clear about IBatisNet, you can imagine that IBatisNet is used to return a generic data list set based on the query conditions.

 

2. Page-based parameter passing for paging Query

In the sample code in this article, you can enter FirstName and (or) LastName to fuzzy match and query some people, and display them on a page through a GridView. The process of passing parameters is very important. after entering the parameters in the two TextBox fields, in the program, we need to analyze whether to click a button or directly click a number for paging query, therefore, the following Page Load data initialization process is very important:

01 protected int currentPg = 1; 02    protected int totalCount = 0; 03    protected int recordsPerPg = 10; 04    private int leftSize = 3; 05    private IList<Person> listPerson = null ; 06    protected void Page_Load( object sender, EventArgs e) 07    { 08        if (IsPostBack == false && string .Compare(Request.RequestType.ToLower(), "get" ) == 0) 09        { 10            if ( string .IsNullOrEmpty(Request[ "pageIndex" ]) == false && RegUtil.IsPositiveNumber(Request[ "pageIndex" ])) 11            { 12                currentPg = int .Parse(Request[ "pageIndex" ]); 13            } 14            if ( string .IsNullOrEmpty(Request[ "firstname" ]) == false ) 15            { 16                this .txtFirstName.Text = Request[ <