script running slow error in .net grid checked

Question

1.00/5 (1 vote)

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Hi Friends,

I have a issue on grid checkbox if i had only 10 rows means its immediately checking but if the rows went up to 200 or 300 rows means raising popup error os stop running script?A script on this page is causing ie to run slow.
my code for loop is:

C#

int intRecIndex = 1;

            foreach (GridViewRow row in CGridView1.Rows)
            {

                chk = (CheckBox)row.FindControl("chkSelect");
                sel = (CheckBox)row.FindControl("chkSelect");

                if (intRecIndex <= CGridView1.Rows.Count)
                {
                    chk.Checked = true;
                    intRecIndex++;
                    checkall();

                }
                else
                {
                    chk.Checked = false;

                }
            }

 public void checkall()
    {

        sel.Checked = true;
        //CheckBox SelectedCheckBox = (CheckBox)sender;
        GridViewRow SelectedGridRow = (GridViewRow)sel.NamingContainer;
        CheckBox rb = (CheckBox)SelectedGridRow.FindControl("chkSelect");
        TextBox ddlgrpcode1 = (TextBox)SelectedGridRow.FindControl("CA_Reason_Desc3");
        ddlgrpcode1.Enabled = true;

    }

please help me how to resolve this!

Posted 21-Mar-12 23:29pm

visnumca123

Updated 22-Mar-12 6:18am

v7

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Comments

phil.o 22-Mar-12 7:10am

int.Parse(Convert.ToString(CGridView1.Rows.Count))

Is it a joke ?
You convert an int to a string, and then use int.Parse() to get the original int again ?

visnumca123 22-Mar-12 9:46am

please take a look now!

ZurdoDev 22-Mar-12 8:11am

The message is about JavaScript. Where is your JavaScript code?

visnumca123 22-Mar-12 8:17am

on the click event i'm using this event and functions only not javascript!

ZurdoDev 22-Mar-12 12:54pm

But the message is that a script is causing it to run slow so there is some script somewhere. How are you invoking the C#?

1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Mohamed Mitwalli · Accepted Answer · 2012-03-22T14:03:00

Hi ,
this example will Guide you .

XML

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>

    <script type="text/javascript">
        function SelectAll(id) {
            var frm = document.forms[0];

            for (i = 0; i < frm.elements.length; i++) {
                if (frm.elements[i].type == "checkbox") {
                    if (frm.elements[i].disabled == true) {
                        frm.elements[i].checked = false;
                    }
                    else {
                        frm.elements[i].checked = document.getElementById(id).checked;
                    }
                }
            }
        }
        function unCheck(id) {
            var frm = document.forms[0];
            var paren = document.getElementById(id);
            var flag = true;
            for (i = 0; i < frm.elements.length; i++) {
                if (frm.elements[i].type == "checkbox") {
                    if (!frm.elements[i].checked) {
                        paren.checked = false;
                        if (frm.elements[i] != paren)
                            flag = false;
                    }
                }
            }
            if (flag == true) paren.checked = true;
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:GridView ID="Gridview1" runat="server"
                        AutoGenerateColumns="False"
                    OnRowDataBound="Gridview1_RowDataBound" AllowPaging="True"

                        >
                        <Columns>
                            <asp:TemplateField>
                                <ItemTemplate>
                                    <asp:CheckBox ID="Chk" runat="server" />
                                </ItemTemplate>
                                <HeaderTemplate>
                                    <asp:CheckBox ID="Chk1" runat="server" />
                                </HeaderTemplate>
                            </asp:TemplateField>

                            <asp:TemplateField HeaderText="test">
                                <ItemTemplate>
                                    <asp:Label ID="lbl_Val" runat="server" Text='<%# Eval("name") %>'></asp:Label>
                                </ItemTemplate>
                            </asp:TemplateField>
                        </Columns>
                    </asp:GridView>
                      <asp:HiddenField ID="HF2" runat="server" />
    </div>
    </form>
</body>
</html>

C#

public partial class _Default : System.Web.UI.Page
{
    testDataContext db = new testDataContext();
    protected void Page_Load(object sender, EventArgs e)
    {
        //binding to Grid
        var result = from x in db.tests
                     select new { x.name };
        Gridview1.DataSource = result;
        Gridview1.DataBind();

    }
    protected void Gridview1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if ((e.Row.RowType == DataControlRowType.Header))
        {
            HF2.Value = ((CheckBox)e.Row.FindControl("Chk1")).ClientID;
            //adding an attribut for onclick event on the check box in the hearder and passing the ClientID of the Select All checkbox
            ((CheckBox)e.Row.FindControl("Chk1")).Attributes.Add("onclick",
                "javascript:SelectAll('" + ((CheckBox)e.Row.FindControl("Chk1")).ClientID + "')");
        }
        else if ((e.Row.RowType == DataControlRowType.DataRow))
        {
            ((CheckBox)e.Row.FindControl("Chk")).Attributes.Add("onclick",
                "javascript:unCheck('" + HF2.Value + "','" + ((CheckBox)e.Row.FindControl("Chk")).ClientID + "')");

        }

    }