设置页面中的所有控件的某属性的方法
对于设置页面中所有控件的属性,需要使用递归的方法进行查找,并且可以使用反射去判断属性和设置属性值。代码如下:
ASPX 代码
<%@ Page Language="C#" AutoEventWireup="true" %>
<%@ Import Namespace="System.Reflection" %>
<%@ Import Namespace="System.ComponentModel" %>
<!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">
<script runat="server">
protected void Button1_Click(object sender, EventArgs e)
{
SetControlArrtibute(Page);
}
private void SetControlArrtibute(Control ctl)
{
Type type = ctl.GetType();
PropertyInfo[] properties = type.GetProperties();
Response.Write("<hr>");
Response.Write(type.ToString());
Response.Write("<br>");
foreach (PropertyInfo property in properties)
{
// 不是所有的属性都能通过这种方法进行得到?
if (property.Name == "Text" && property.PropertyType == typeof(String))
{
Response.Write("<li>" + property.Name + " = " + GetPropertyValue(ctl, property.Name));
}
if (property.Name.Equals("Enabled"))
{
Type propertyType = property.PropertyType;
TypeConverter converter = TypeDescriptor.GetConverter(propertyType);
Object arg = converter.ConvertFrom("false");
object[] args = { arg };
BindingFlags flags = BindingFlags.SetProperty;
Binder binder = null;
type.InvokeMember("Enabled", flags, binder, ctl, args);
}
}
if (ctl.HasControls())
{
foreach (Control c in ctl.Controls)
{
SetControlArrtibute(c);
}
}
}
private String GetPropertyValue(Control control, String propertyName)
{
Type type = control.GetType();
BindingFlags flags = BindingFlags.GetProperty;
Binder binder = null;
object[] args = null;
object result = type.InvokeMember(propertyName, flags, binder, control, args);
return Convert.ToString(result);
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
GridView1.DataSource = new String[] { "A", "B" };
GridView1.DataBind();
}
}
</script>
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="MengXianhuiForm" runat="server">
<asp:TextBox ID="TextBox1" runat="server" Text="能输入文字吗"></asp:TextBox>
<asp:ListBox ID="ListBox1" runat="server">
<asp:ListItem>AA</asp:ListItem>
<asp:ListItem>BB</asp:ListItem>
</asp:ListBox>
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="x" runat="server" Text="测试" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="设置页面中的所有控件的 Enabled 属性" />
</form>
</body>
</html>
补充:Web开发 , ASP.Net ,