Problem with Header row checkbox

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I have grid view, in which I have a checkbox column. The problem is that when I click on the header row checkbox, it marks all row checkboxes, but when I do paging and come back to same page, the header check box state is not maintaining but other are in marked state.

So I want to maintain my top checkbox which selects all checkboxes

Here is my code:

C#

protected void grdEmployee_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            try
            {
                grdEmployee.PageIndex = e.NewPageIndex;
 
                List<string> listEmpId = new List<string>();
                if (hdnAdvanceSearch.Value == "Normal")
                {
                    if (ViewState["empListNormal"] != null)
                    {
                        listEmpId = (List<string>)ViewState["empListNormal"];
                    }
                    foreach (GridViewRow row in grdEmployee.Rows)
                    {
                        CheckBox chkRow = (CheckBox)row.FindControl("chkRow");
                        CheckBox chkHeader = (CheckBox)row.FindControl("chkHeader");
                        HiddenField hdnEmployeeID = (HiddenField)row.FindControl("hdnEmployeeID");
                        
                        if (chkRow.Checked)
                        {
                            if (!listEmpId.Contains(hdnEmployeeID.Value))
                            {
                                listEmpId.Add(hdnEmployeeID.Value);
                            }
                        }
                        else
                        {
                            if (listEmpId.Contains(hdnEmployeeID.Value))
                            {
                                listEmpId.Remove(hdnEmployeeID.Value);
                            }
                        }
                    }
                    ViewState["empListNormal"] = listEmpId;
                    BindEmployeeGrid();
                }
                else if (hdnAdvanceSearch.Value == "Advanced")
                {
                    if (ViewState["empListAdvanced"] != null)
                    {
                        listEmpId = (List<string>)ViewState["empListAdvanced"];
                    }
                    foreach (GridViewRow row in grdEmployee.Rows)
                    {
                        CheckBox chkRow = (CheckBox)row.FindControl("chkRow");
                        HiddenField hdnEmployeeID = (HiddenField)row.FindControl("hdnEmployeeID");
                        if (chkRow.Checked)
                        {
                            if (!listEmpId.Contains(hdnEmployeeID.Value))
                            {
                                listEmpId.Add(hdnEmployeeID.Value);
                            }
                        }
                        else
                        {
                            if (listEmpId.Contains(hdnEmployeeID.Value))
                            {
                                listEmpId.Remove(hdnEmployeeID.Value);
                            }
                        }
                    }
                    ViewState["empListAdvanced"] = listEmpId;
                    BindAdvancedEmployeeGrid();
                }
            }
            catch (Exception ex)
            { 
               
            }
        }

Posted 15-Jul-13 23:00pm

Torakami

Updated 15-Jul-13 23:06pm

Johnny J.

v3

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Torakami 16-Jul-13 5:06am

what changes have you made can you shoe me that

2 solutions

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Priyanka7777 · Answer 1 · 2013-07-15T23:15:00

Solution 2

Maintaining States of Selected CheckBoxes in Different Pages inside the GridView[^]

Posted 15-Jul-13 23:15pm

Priyanka7777

Comments

Torakami 17-Jul-13 2:10am

Can Any one help me on this issue

Thanks7872 17-Jul-13 6:17am

Good one. ↑voted.

Dholakiya Ankit · Answer 2 · 2013-07-15T23:11:00

Solution 1

Selecting multiple checkboxes inside a GridView control[^]

Posted 15-Jul-13 23:11pm

Dholakiya Ankit

Comments

Torakami 16-Jul-13 6:27am

I tried this javascript .. but it also selects checkbox outside the gridview as well .. I dont know why

Dholakiya Ankit 16-Jul-13 6:28am

give me code which you have tried

Torakami 16-Jul-13 6:37am

function SelectAllCheckboxes(spanChk) {
debugger;
// Added as ASPX uses SPAN for checkbox
var oItem = spanChk.children;
var theBox = (spanChk.type == "checkbox") ?
spanChk : spanChk.children.item[0];
xState = theBox.checked;
elm = theBox.form.elements;

for (i = 0; i < elm.length; i++)
if (elm[i].type == "checkbox" &&
elm[i].id != theBox.id) {
//elm[i].click();
if (elm[i].checked != xState)
elm[i].click();
//elm[i].checked=xState;
}
}

Torakami 16-Jul-13 6:38am

Torakami 16-Jul-13 6:39am

the problmem is check box gets selected outside the gridview as well and on changing the page pagination gets diabled

Torakami 16-Jul-13 7:07am

Can I get answer please

Torakami 16-Jul-13 7:48am

Can you please answer here . Its urgent

Dholakiya Ankit 16-Jul-13 7:54am

http://www.aspdotnet-suresh.com/2010/04/maintaining-state-of-checkboxes-while.html

Torakami 17-Jul-13 1:40am

Thanks for this, but can you suggest me in my exisisting code