.aspx
<ext:Button ID="Button1" runat="server" Text="2*2=?" Icon="Lightning">
<Listeners>
<Click Handler="
Ext.net.DirectMethods.GetTimeStamp(2,{
success: function (result) {
txtGet.setValue(result);
}
});" />
</Listeners>
</ext:Button>
<ext:TextField ID="txtGet" runat="server" FieldLabel="显示结果"></ext:TextField>
.cs代码：
[DirectMethod]
public string GetTimeStamp(int value)
{
int result = value * value;
return result.ToString();
}