[CLOSED] GridPanel remove/clear columns

  1. #1

    [CLOSED] GridPanel remove/clear columns

    Hi,
    How can I remove all columns of a GridPanel in client side?

    Thanks.
    Last edited by Daniil; Dec 12, 2012 at 11:12 AM. Reason: [CLOSED]
  2. #2
    Hello!

    Actually, GridPanel doesn't supposed to be without Columns but you can look at following example:

    <%@ Page Language="C#" %>
    
    <%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
    
    <script runat="server">
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!X.IsAjaxRequest)
            {
                this.Store1.DataSource = this.Data;
                this.Store1.DataBind();
            }
        }
    
        private object[] Data
        {
            get
            {
                return new object[]
                {
                    new object[] { "3m Co", 71.72, 0.02, 0.03, "9/1 12:00am" },
                    new object[] { "Alcoa Inc", 29.01, 0.42, 1.47, "9/1 12:00am" },
                    new object[] { "Altria Group Inc", 83.81, 0.28, 0.34, "9/1 12:00am" },
                    new object[] { "American Express Company", 52.55, 0.01, 0.02, "9/1 12:00am" },
                    new object[] { "American International Group, Inc.", 64.13, 0.31, 0.49, "9/1 12:00am" },
                    new object[] { "AT&T Inc.", 31.61, -0.48, -1.54, "9/1 12:00am" },
                    new object[] { "Boeing Co.", 75.43, 0.53, 0.71, "9/1 12:00am" },
                    new object[] { "Caterpillar Inc.", 67.27, 0.92, 1.39, "9/1 12:00am" },
                    new object[] { "Citigroup, Inc.", 49.37, 0.02, 0.04, "9/1 12:00am" },
                    new object[] { "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, "9/1 12:00am" },
                    new object[] { "Exxon Mobil Corp", 68.1, -0.43, -0.64, "9/1 12:00am" },
                    new object[] { "General Electric Company", 34.14, -0.08, -0.23, "9/1 12:00am" },
                    new object[] { "General Motors Corporation", 30.27, 1.09, 3.74, "9/1 12:00am" },
                    new object[] { "Hewlett-Packard Co.", 36.53, -0.03, -0.08, "9/1 12:00am" },
                    new object[] { "Honeywell Intl Inc", 38.77, 0.05, 0.13, "9/1 12:00am" },
                    new object[] { "Intel Corporation", 19.88, 0.31, 1.58, "9/1 12:00am" },
                    new object[] { "International Business Machines", 81.41, 0.44, 0.54, "9/1 12:00am" },
                    new object[] { "Johnson & Johnson", 64.72, 0.06, 0.09, "9/1 12:00am" },
                    new object[] { "JP Morgan & Chase & Co", 45.73, 0.07, 0.15, "9/1 12:00am" },
                    new object[] { "McDonald\"s Corporation", 36.76, 0.86, 2.40, "9/1 12:00am" },
                    new object[] { "Merck & Co., Inc.", 40.96, 0.41, 1.01, "9/1 12:00am" },
                    new object[] { "Microsoft Corporation", 25.84, 0.14, 0.54, "9/1 12:00am" },
                    new object[] { "Pfizer Inc", 27.96, 0.4, 1.45, "9/1 12:00am" },
                    new object[] { "The Coca-Cola Company", 45.07, 0.26, 0.58, "9/1 12:00am" },
                    new object[] { "The Home Depot, Inc.", 34.64, 0.35, 1.02, "9/1 12:00am" },
                    new object[] { "The Procter & Gamble Company", 61.91, 0.01, 0.02, "9/1 12:00am" },
                    new object[] { "United Technologies Corporation", 63.26, 0.55, 0.88, "9/1 12:00am" },
                    new object[] { "Verizon Communications", 35.57, 0.39, 1.11, "9/1 12:00am" },
                    new object[] { "Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, "9/1 12:00am" }
                };
            }
        }
    </script>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <title>Simple Array Grid - Ext.NET Examples</title>
        <link href="../../../../resources/css/examples.css" rel="stylesheet" type="text/css" />    
    
        <script type="text/javascript">
            var template = '<span style="color:{0};">{1}</span>';
    
            var change = function (value) {
                return String.format(template, (value > 0) ? "green" : "red", value);
            };
    
            var pctChange = function (value) {
                return String.format(template, (value > 0) ? "green" : "red", value + "%");
            };
        </script>
    </head>
    <body>
        <ext:ResourceManager runat="server" />
        
        <h1>Simple Array Grid</h1>
        <ext:Button runat="server" Text="RemoveAllColumns">
            <Listeners>
                <Click Handler="
                    try {
                    var cm = new Ext.grid.ColumnModel({columns: []});
                    #{GridPanel1}.view.initData(#{GridPanel1}.store, cm);
                    #{GridPanel1}.colModel = cm;
                    #{GridPanel1}.view.refresh(true);
                    } catch(e) {}
                "></Click>
            </Listeners>
        </ext:Button>
    
        <ext:GridPanel 
            ID="GridPanel1"
            runat="server" 
            StripeRows="true"
            Title="Array Grid" 
            TrackMouseOver="true"
            Width="600" 
            Height="350"
            AutoExpandColumn="company">
            <Store>
                <ext:Store ID="Store1" runat="server">
                    <Reader>
                        <ext:ArrayReader>
                            <Fields>
                                <ext:RecordField Name="company" />
                                <ext:RecordField Name="price" Type="Float" />
                                <ext:RecordField Name="change" Type="Float" />
                                <ext:RecordField Name="pctChange" Type="Float" />
                                <ext:RecordField Name="lastChange" Type="Date" DateFormat="M/d hh:mmtt" />
                            </Fields>
                        </ext:ArrayReader>
                    </Reader>
                </ext:Store>
            </Store>
            <ColumnModel runat="server">
                <Columns>
                    <ext:Column ColumnID="Company" Header="Company" DataIndex="company" />
                    <ext:Column Header="Price" DataIndex="price">                  
                        <Renderer Format="UsMoney" />
                    </ext:Column>
                    <ext:Column ColumnID="Change" Header="Change" DataIndex="change">
                        <Renderer Fn="change" />
                    </ext:Column>
                    <ext:Column Header="Change" DataIndex="pctChange">
                        <Renderer Fn="pctChange" />
                    </ext:Column>
                    <ext:DateColumn Header="Last Updated" DataIndex="lastChange" />
                </Columns>
            </ColumnModel>
            <SelectionModel>
                <ext:RowSelectionModel runat="server" SingleSelect="true" />
            </SelectionModel>
        </ext:GridPanel>
    </body>
    </html>
  3. #3
    Hi,

    Could you clarify why do you need to remove all columns?

    To populate with new ones? If yes, please look at the reconfigure method.
    http://docs.sencha.com/ext-js/3-4/#!...od-reconfigure

Similar Threads

  1. Replies: 0
    Last Post: Aug 23, 2012, 11:55 PM
  2. Clear/Remove Group
    By sysmo in forum 2.x Help
    Replies: 1
    Last Post: Jun 18, 2012, 11:30 PM
  3. [CLOSED] Add/remove columns to <ext:ColumnLayout in DirectEvent
    By Jurke in forum 1.x Legacy Premium Help
    Replies: 12
    Last Post: Sep 05, 2011, 11:45 AM
  4. Clear selections of gridpanel
    By onurbozkurt in forum 1.x Help
    Replies: 4
    Last Post: Aug 19, 2009, 5:00 PM
  5. [CLOSED] Clear store fields and grid columns from AjaxEvent
    By jchau in forum 1.x Legacy Premium Help
    Replies: 3
    Last Post: Feb 22, 2009, 2:18 PM

Posting Permissions