在后面显示使用C#代码加载图像 [英] show loading image using c# code behind

问题描述

大家好，

我在一个Web应用程序上工作，我想在代码创建xml文件并下载时显示加载图像(繁忙指示器)，我想在div中显示图像.我应该只使用c#代码而不是更新面板或jquery ajax技术.我的代码如下:

受保护的void lb_DownloadXML_Click(对象发送者，EventArgs e)
{
this.imgLoading.Visible = true;
//我所有的代码
this.imgLoading.Visible = false;
}

我的形象是

< img src ="Images/loading_big.gif" width ="50" height ="40" runat ="server" id ="imgLoading"
visible ="false"/>


但它不起作用.谁能解释我如何完成这项任务.

Hi all,

I am working on a web application where I want to show a loading image (busy indicator) when my code create a xml file and download it I want to show the image in a div. I should use c# code only not update panel nor the jquery ajax technique. My code looks like:

protected void lb_DownloadXML_Click(object sender, EventArgs e)
{
this.imgLoading.Visible = true;
//all my code
this.imgLoading.Visible = false;
}

my image is

<img src="Images/loading_big.gif" width="50" height="40" runat="server" id="imgLoading"
visible="false" />


but its not working. Can anybody explain me how can I achieve this task.

thanks in advance.

推荐答案

尝试通过删除代码中的以下内容

Try by removing the following in your code

protected void lb_DownloadXML_Click(object sender, EventArgs e)
      {
            this.imgLoading.Visible = true;
            //this.imgLoading.Visible = false; (Comment or delete this statement)
      }

这篇关于在后面显示使用C#代码加载图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！