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Paging for First, Next, Previous and Last in gridview

Posted By:Syed Shakeer Hussain       Posted Date: September 03, 2009    Points: 25    Category: ASP.NET    URL: http://www.dotnetspark.com  
 

From this Article you can know how make Paging for First, Next, Previous and Last in GridView.

1) First  fill the gridview with Data from a Table.

2) Drag and Drop 4 Buttons keep it at the bottom of the Gridview.

3) Change the text of a buttons using Properties.

 

4) Select Gridview Properties and set AllowPaging=True. See the below picture

 

 

5) Expand the PageSetting Properties of Gridview, and set visible property as False.

 

6) Next we have to set a gridview PageSize property. The Default

   PageSize is 10.you can keep how  much size you want to display rows per page.

   Here I kept 6 rows to display in gridview per page. You can observe how to set

  page in 'Pagesetting Picture' marked with yellow color...

 

 

 

7) Under SelectedRowStyle set 'ShowFooter as False'

 

8) The Ouptput of your gridview Image is shown below.

 

How to Write the Code for Paging First, Next, Previous and Last.

 

1)     Paging for First Button: Double click on 'First' Button and write the below code.

protected void btnfirst_Click(object sender, EventArgs e)

        {

        gridview1.PageIndex = 0;

     }

Explantion: when you run the Page it contains 6 recors in Gridview.

Suppose the user in last Page.When the user clicks  on 'First Button' first 6 records of the page has to be display in gridview.so the first gridview page Index(property) is 'zero'.There is a Property called 'PageIndex' for Gridview.

 

2)      Paging for Next Button: Double click on 'Next Button 'and write the below code.

protected void btnnext_Click(object sender, EventArgs e)

    {

         int i = gridview1.PageIndex + 1;

            if (i <= gridview1.PageCount)

            {

                gridview1.PageIndex = i;

         }

}

Explanation: 'PageCount' is used to count number of pages availble in a Gridview.

 

3)     Paging for Previous Button: Double click on 'Previous Button'and write the below code.

  pProtected void btnprevious_Click(object sender, EventArgs e)

     {

            int i = gridview1.PageCount;

 

              if (gridview1.PageIndex > 0)

              {

 

                gridview1.PageIndex = gridview1.PageIndex - 1;

               

               }

       }

 

4)     Paging for Last Button: Double click on 'Last Button'and write the below code

proProtected void btnlast_Click(object sender, EventArgs e)

    {

      

            gridview1.PageIndex = gridview1.PageCount;

}

 

In the Above Picture observe on Last Button.it is in Enable=False state,because in gridview the last page records are displaying.So again no need with last Button.In same Senario remaining buttons also made Enable=False where the buttons are not usefull to click the user.you can see the coding fo Enable in .aspx.cs page

The Complete .aspx.cs Page

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

 

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

 

        btnfirst.Enabled = false;

        btnprevious.Enabled = false;

 

    }

protected void btnnext_Click(object sender, EventArgs e)

    {

       

            int i = gridview1.PageIndex + 1;

            if (i <= gridview1.PageCount)

            {

                gridview1.PageIndex = i;

                btnlast.Enabled = true;

                btnprevious.Enabled = true;

                btnfirst.Enabled = true;

            }

          

            if (gridview1.PageCount-1 == gridview1.PageIndex)

            {

                btnnext.Enabled = false;

                btnlast.Enabled = false;

            }

          

           

 

    }

    protected void btnprevious_Click(object sender, EventArgs e)

    {

      

 

            int i = gridview1.PageCount;

            if (gridview1.PageIndex > 0)

            {

 

                gridview1.PageIndex = gridview1.PageIndex - 1;

                btnlast.Enabled = true ;

            }

 

            if (gridview1.PageIndex == 0)

            {

                btnfirst.Enabled = false;

            }

            if (gridview1.PageCount - 1 == gridview1.PageIndex+1)

            {

                btnnext.Enabled = true;

            }

            if (gridview1.PageIndex == 0)

            {

                btnprevious.Enabled = false;

            }

    }

    protected void btnlast_Click(object sender, EventArgs e)

    {

      

            gridview1.PageIndex = gridview1.PageCount;

            btnlast.Enabled = false;

            btnfirst.Enabled = true;

    }

    protected void btnfirst_Click(object sender, EventArgs e)

    {

        gridview1.PageIndex = 0;

        btnfirst.Enabled = false;

        btnprevious.Enabled = false;

        btnlast.Enabled = true;

        btnnext.Enabled = true;

       

    }

}

This type of Paging is also called as Custom Paging.


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