Thank you for editing.
I can suggest the following solution.
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)
{
Store store = this.GridPanel1.GetStore();
store.DataSource = new object[]
{
new object[] { "test1", "test2", "test3" },
new object[] { "test4", "test5", "test6" },
new object[] { "test7", "test8", "test9" }
};
}
}
protected void Show(object sender, DirectEventArgs e)
{
X.Js.Call("show");
this.ButtonShow.Disabled = true;
this.ButtonHide.Disabled = false;
}
protected void Hide(object sender, DirectEventArgs e)
{
X.Js.Call("hide");
this.ButtonHide.Disabled = true;
this.ButtonShow.Disabled = false;
}
</script>
<!DOCTYPE html>
<html>
<head runat="server">
<title>Ext.NET v2 Example</title>
<script>
var show = function () {
var grid = App.GridPanel1,
sm = grid.getSelectionModel();
if (sm.injectCheckbox === false) {
sm.injectCheckbox = 0;
sm.addCheckbox(grid.getView());
} else {
grid.getView().headerCt.items.getAt(0).show();
}
};
var hide = function () {
App.GridPanel1.getView().headerCt.items.getAt(0).hide();
};
</script>
</head>
<body>
<form runat="server">
<ext:ResourceManager runat="server" />
<ext:Button
ID="ButtonShow"
runat="server"
Text="Show"
OnDirectClick="Show" />
<ext:Button
ID="ButtonHide"
runat="server"
Text="Hide"
OnDirectClick="Hide"
Disabled="true" />
<ext:GridPanel ID="GridPanel1" runat="server">
<Store>
<ext:Store runat="server">
<Model>
<ext:Model runat="server">
<Fields>
<ext:ModelField Name="test1" />
<ext:ModelField Name="test2" />
<ext:ModelField Name="test3" />
</Fields>
</ext:Model>
</Model>
</ext:Store>
</Store>
<ColumnModel runat="server">
<Columns>
<ext:Column runat="server" Text="Test1" DataIndex="test1" />
<ext:Column runat="server" Text="Test2" DataIndex="test2" />
<ext:Column runat="server" Text="Test3" DataIndex="test3" />
</Columns>
</ColumnModel>
<SelectionModel>
<ext:CheckboxSelectionModel runat="server" InjectCheckbox="false" />
</SelectionModel>
</ext:GridPanel>
</form>
</body>
</html>