CODEWITHSUNDEEP
asp.netjavascriptgridview
pavanred
pavanred

Reputation: 13823

Control gridview column visibility using javascript

I have a gridview and I have to control the visiblitiy of the grid columns using javascript. Consider this gridview. I have a few columns. 

<asp:GridView ID="grdTest" runat="server" AutoGenerateColumns="False" Width="100%">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="chkResource" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Resource">
            <ItemTemplate>
               <asp:Label ID="Resource" Text='<%# Bind("Resource") %>' runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
               <asp:BoundField DataField="Description" HeaderText="Resource Description" HtmlEncode="false">
        <ItemStyle HorizontalAlign="Center" />
        <HeaderStyle HorizontalAlign="Center" />
    </asp:BoundField>

     </asp:TemplateField>
  </Columns>
</asp:GridView>

I can control the visibility of these columns at the server side by using this - 

grdTest.Columns[n].Visible = false;

But, I have to control the visibility from the client side using javascript. I tried a lot but I was only able to access either the row object or any particular cell of the gridview. 

grid.rows[index].cells[i].style="display: none"; //for cell

Is there a way to access the column object of the gridview and control its visibility using javascript?

Upvotes: 2

Views: 10032

Answers (2)

Chris Porter
Chris Porter

Reputation: 3687

A simpler approach to this would be to use jQuery and set a CSS class name on the cells of the column you want to show/hide.

<asp:GridView ID="grdTest" runat="server" AutoGenerateColumns="False" Width="100%">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate CssClass="hide-me">
                <asp:CheckBox ID="chkResource" runat="server" />
            </ItemTemplate>
       </asp:TemplateField>
    </Columns>
</asp:GridView>

Set the visibility to display:none by default in the stylesheet, or you could alternatively put this in the cell's style:

.hide-me { display: none; }

Then from javascript using jQuery:

$('.click-me').click(function(e) {
    $('.hide-me').show();
    // OR you could use toggle:
    $('.hide-me').toggle();
});

Upvotes: 0

Thea
Thea

Reputation: 8067

You can try with calling server side code. Here is the js function that is used to call the code:

function HideColumns(sender, args)
{
    PageMethods.HideSomeColumns(args, onSuccess, onError);
}

function onReportSuccess(result)
{
}

function onReportError(error)
{
    alert("There was an error.");
}

And here is the server side function that is used to hide the columns that you want:

[WebMethod]
[System.Web.Script.Services.ScriptMethod]
public static void ReportTranslation(int n)
{
    grdTest.Columns[n].Visible = false;
}

There is other option for you - using pure js:

function show_hide_column(col_no, do_show) {

    var stl;
    if (do_show) stl = 'block'
    else         stl = 'none';

    var tbl  = document.getElementById('id_of_table');
    var rows = tbl.getElementsByTagName('tr');

    for (var row=0; row<rows.length;row++) {
      var cels = rows[row].getElementsByTagName('td')
      cels[col_no].style.display=stl;
    }
}

Upvotes: 1

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