ClientScript.RegisterStartupScript问题 [英] problem with ClientScript.RegisterStartupScript

问题描述

好吧，我有2页page1和page2
单击网格按钮后从page1加载page2作为窗口

在第2页中，我有3个控件:TextBox和2 Button Save and Close

这是下面的代码

well I have 2 pages page1 and page2
from page1 after clicking on grid button loads page2 as window

In page 2 I have 3 control: TextBox and 2 Button Save and Close

here is code below

<script type="text/javascript">
             function returnToParent(result) {
                 var arg = new Object();
                 arg.result = result;
                 arg.text = document.getElementById("txtComment").value;
                 var wnd = GetRadWindow();
                 wnd.close(arg);
             }
             function GetRadWindow() {
                 var mwnd = null;
                 if (window.radWindow) mwnd = window.radWindow;
                 else if (window.frameElement.radWindow) mwnd = 
                          window.frameElement.radWindow;
                 return mwnd;
             }
</script>

<asp:TextBox ID="txtComment" TextMode="MultiLine" runat="server"
     Width="700px" Height="60px" />
<asp:LinkButton ID="lnkSave" runat="server" Text="Save" Width="100%" 
     CssClass="white" onclick="lnkSave_Click" />
<asp:LinkButton ID="lnkClose" runat="server" Text="Close" Width="100%"
     CssClass="white" CausesValidation="false"
     OnClientClick="returnToParent(0); return false;" />

和背后的代码

and Code Behind

protected void lnkSave_Click(object sender, EventArgs e) {

            if(!string.IsNullOrEmpty(txtComment.Text))
            {
                // code
                ClientScript.RegisterStartupScript(this.GetType(),
        "CloseWindow", "returnToParent(1)", true);
            }
            else {
               ClientScript.RegisterStartupScript(this.GetType(), 
        "CloseWindow", "returnToParent(1)", true);
            }
}

如您看到的关闭按钮，我调用javascript函数 returnToParent(result)并设置resalt 0
它扭曲并且不回发
现在我想如果TextBox.Text为空，请在后面的代码中检查它
if(！string.IsNullOrEmpty(txtComment.Text))

如果为空，则转到else语句，然后尝试执行该操作，以免在注册脚本后回发
但是当文本框为空时我单击保存"按钮时会出现麻烦，它会再次回发

我该怎么做而不回发? :(

as you see close button I call javascript function returnToParent(result) and set resalt 0
it warks and does not postback
now I want to do if TextBox.Text is empty that I check it in code behind
if(!string.IsNullOrEmpty(txtComment.Text))

if it''s empty it goes to else statement there I try to do it so that not postback with registering script
but there is trouble when I click save button when textbox is empty it postbacks again

How can I do it that not postback?? :(

推荐答案

Page.RegisterStartupScript("name", "<script>IsEmpty();</script>");

javascript函数

javascript function

<br />
function IsEmpty()<br />
{<br />
var a=

get(clientId+txtComment).value<br /> .<br /> .<br /> .<br /> <br /> }

get(clientId+txtComment).value<br /> .<br /> .<br /> .<br /> <br /> }

在javascript
中编写您需要的代码 在这里，您应该在controlid之前添加clientId以获取控件
希望对您有帮助.

write the code you need here in javascript
Here you should add the clientId before the controlid for getting the control
I hope this may help you..

如果您不希望在文本框为空时进行回发，则需要在客户端进行检查.

If you don''t want the postback to occur when the textbox is empty then you need to check it at the client.

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