在很多時候我們需要動態添加網格,此時我們就需要對GridPanel進行後臺繪製.設計如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="CreationGridPanel.aspx.cs" Inherits="ExtNet.CreationGridPanel" %>
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
<!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></title>
<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>
<form id="form1" runat="server">
<ext:ResourceManager ID="ResourceManager1" runat="server">
</ext:ResourceManager>
<ext:Window
ID="Window1"
runat="server"
Title="動態GridPanel"
Layout="FitLayout"
Height="350"
Width="600">
<%-- FitLayout:對於包含一個單獨的項目，自動展開到能充滿 佈局所屬的容器
FormLayout:此佈局管理器被特別設計用來 渲染和管理forms 的子組件。 它負責渲染Fields 的labels
ColumnLayout:這是一種可選的佈局風格，用來在用一個多列的格式中創建結構化的佈局 ，可以使用百分比或者一個固定值指定每一列的寬度，但是允許根據內容 改變高度。
--%>
<TopBar>
<ext:Toolbar ID="Toolbar1" runat="server">
<Items>
<ext:Button ID="btnAddGridPanel"
runat="server"
Text="添加GridPanel"
Icon="Add">
<DirectEvents>
<Click OnEvent="btnAddGridPanel_Click">
<EventMask
ShowMask="true"
Target="CustomTarget"
CustomTarget="Window1"
/>
</Click>
</DirectEvents>
</ext:Button>
</Items>
</ext:Toolbar>
</TopBar>
</ext:Window>
</form>
</body>
</html>
後臺代碼如下:
using System;
using Ext.Net;
namespace ExtNet
{
public partial class CreationGridPanel : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnAddGridPanel_Click(object sender, DirectEventArgs e)
{
this.BuildGridPanel().AddTo(this.Window1);
// Reference Button by sender argument
((Button)sender).Disabled = true;
// Reference Button by .Items Collection
//this.Window1.TopBar.Toolbar.Items[0].Disabled = true;
// Reference Button directly by .ID
// this.btnAddGridPanel.Disabled = true;//這個最簡單吧
}
private GridPanel BuildGridPanel()
{
//動態添加控件
return new GridPanel
{
Border = false,
StripeRows = true,
TrackMouseOver = true,
AutoExpandColumn = "Company",
Store =
{
this.BuildStore()
},
SelectionModel =
{
new RowSelectionModel { SingleSelect = true }
},
ColumnModel =
{
Columns =
{
new Column
{
ColumnID = "Company",
Header = "Company",
DataIndex = "company"
},
new Column
{
Header = "Price",
DataIndex = "price",
Renderer = { Format = RendererFormat.UsMoney }
},
new Column
{
Header = "Change",
DataIndex = "change",
Renderer = { Fn = "change" }
},
new Column
{
Header = "Change",
DataIndex = "pctChange",
Renderer = { Fn = "pctChange" }
},
new DateColumn
{
Header = "Last Updated",
DataIndex = "lastChange"
}
}
}
};
}
//添加store
private Store BuildStore()
{
Store store = new Store
{
ID = "Store1", // <-- ID is Required
Reader =
{
new ArrayReader
{
Fields =
{
new RecordField("company"),
new RecordField("price", RecordFieldType.Float),
new RecordField("change", RecordFieldType.Float),
new RecordField("pctChange", RecordFieldType.Float),
new RecordField("lastChange", RecordFieldType.Date, "M/d hh:mmtt")
}
}
}
};
store.DataSource = this.Data;
store.DataBind();
return store;
}
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" },
};
}
}
}
}
