Asp.net 从页面中删除一些html后出现PageRequestManagerParserErrorException
我想在页面呈现期间从页面中删除一些html(不要问为什么)Asp.net 从页面中删除一些html后出现PageRequestManagerParserErrorException,asp.net,updatepanel,Asp.net,Updatepanel,我想在页面呈现期间从页面中删除一些html(不要问为什么) 受保护的覆盖无效渲染(HtmlTextWriter) { MemoryStream MemoryStream=新的MemoryStream(); 尝试 { 使用(StreamWriter StreamWriter=新StreamWriter(memoryStream)) { var textWriter=新的HtmlTextWriter(streamWriter); base.Render(textWriter); textWriter
受保护的覆盖无效渲染(HtmlTextWriter)
{
MemoryStream MemoryStream=新的MemoryStream();
尝试
{
使用(StreamWriter StreamWriter=新StreamWriter(memoryStream))
{
var textWriter=新的HtmlTextWriter(streamWriter);
base.Render(textWriter);
textWriter.Flush();
memoryStream.Position=0;
使用(StreamReader=新StreamReader(memoryStream))
{
var text=reader.ReadToEnd();
Regex r=new Regex(“解决方案是创建一个自定义控件,该控件在此示例中从GridView派生,并在该控件的呈现方法中使用此代码,而不是在使用该控件的页面上使用此代码。检查此链接
protected override void Render(HtmlTextWriter writer)
{
MemoryStream memoryStream = new MemoryStream();
try
{
using (StreamWriter streamWriter = new StreamWriter(memoryStream))
{
var textWriter = new HtmlTextWriter(streamWriter);
base.Render(textWriter);
textWriter.Flush();
memoryStream.Position = 0;
using (StreamReader reader = new StreamReader(memoryStream))
{
var text = reader.ReadToEnd();
Regex r = new Regex("<option .+?</option>");
text = r.Replace(text, "");
writer.Write(text);
reader.Close();
}
}
}
catch (ObjectDisposedException)
{
}
finally
{
memoryStream.Dispose();
}
}