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问题描述
Hi I am using below code to conditionally add sriptmanager tag ,but below code is always adding scriptmanager tag irrespective of condition.
Please check the flaw in this code and suggest how can I add ScriptManager
<form id="Form1" method="post" runat="server" class=top_form>
<asp:placeholder id="ViewPlaceholder" runat="server"></asp:placeholder>
<%
if (Request.QueryString["UseAjax"] == "true")
{
bool AppValue= Convert.ToBoolean(ConfigurationManager.AppSettings.Get("AddScriptManager"));
if (AppValue){
%>
<asp:ScriptManager ID="smanager1" runat="server" ScriptMode="Release" />
<%}
}%>
</form>
Thanks,
Salmon
推荐答案
<asp:placeholder id="ViewPlaceholder" runat="server"></asp:placeholder>
2.将条件代码放在CodeBehind中:
2. Put the conditional code in the CodeBehind:
protected void Page_Init(object sender, EventArgs e)
{
if (Request.QueryString["UseAjax"] == "true")
{
bool AppValue = Convert.ToBoolean(ConfigurationManager.AppSettings.Get("AddScriptManager"));
if (AppValue)
{
ScriptManager script = new ScriptManager();
script.ID = "smanager1";
script.ScriptMode = ScriptMode.Release;
ViewPlaceholder.Controls.Add(script);
}
}
}
不幸的是,如果您将条件代码放入标记中,则如果您要包含ScriptManager
的话,它将无法按预期工作.在这种要求下,您必须如上所述在CodeBehind中添加ScriptManager
.
Unfortunately, if you put the conditional code in the Markup, it will not work as expected in case if you want to include a ScriptManager
. In such requirement, you have to add the ScriptManager
in the CodeBehind as described above.
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