How can i pass or keep my cheched checkbox when the page is changed in gridview?

Question

I have a gridview it includes checkboxes. When i click them it goes to SelectedRss_Click function and I can keep the data thanks to it. However, when i change tha page of gridview, the checked checkboxes are unchecked. How can i solve this problem.

My SelectedRss_Click function.

protected void SelectedRss_Click(object sender, EventArgs e)
{
    ArrayList list = new ArrayList();
    ArrayList listcategory = new ArrayList();
    list.Clear();
    listcategory.Clear();                
    foreach (GridViewRow row in GridView1.Rows)
    {
        // Access the CheckBox
        CheckBox cb = (CheckBox)row.FindControl("FeedSelector");
        if (cb != null && cb.Checked)
        {
            string feedURL = ((HiddenField)GridView1.Rows[row.RowIndex].FindControl("HiddenField1")).Value;
            string rsscategory = GridView1.Rows[row.RowIndex].Cells[2].Text.ToString();
            list.Add(feedURL);
            listcategory.Add(rsscategory);
            Session["SelectedFeedURL"] = list;
            Session["SelectedFeedCategory"] = listcategory;
         }
    }
}

@Pankaj Garg's answer is a good one. You could alternativly make the pages definition global in the calling class, this would persist the page and it contents for reuse... — MoonKnight, Apr 15 '12 at 12:48

Pankaj · Answer 1 · 2012-04-15T12:44:29.653

1

ViewState

It's because by end of the Page Life Cycle all controls get Disposed and State of the Page will be lost.

Preventive Action

While changing the page of GridView, in the PageindexChanging event of GridView, save checked checkboxes row details of the Current Page in ViewState. Similarly you can remove the rows from ViewState from unchecked GridView CheckBox rows.
Corrective Action

The saved records in ViewState will be checked in GridView on PageIndexChanging Event.

edited Apr 15 '12 at 12:44

answered Apr 15 '12 at 12:32

Pankaj

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I tried to copy my codes in pageindexchanging but how can i do it saving the gridview state. – leventkalay92 Apr 15 '12 at 12:35
I did it by copying the codes which are above. is there any else method. saving records. – leventkalay92 Apr 15 '12 at 12:51

How can i pass or keep my cheched checkbox when the page is changed in gridview?

1 Answers1