我如何添加标签COLGROUP对ASP:Datagrid控件? [英] How Do I Add Colgroup Tag to ASP:Datagrid Control?
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问题描述
如何将COLGROUP标记添加到DataGrid控件,这样我可以使用CSS样式每一列?
How do I add a colgroup tag to the datagrid control so that I can style each column using css?
推荐答案
我以为这是写给在.NET 3.5中,但我找不到任何引用。不管怎么说,这里是一个手卷服务器控件允许您指定 COLGROUP
...
I thought this was addressed in .NET 3.5, but I can't find any references. Anyways, here is a hand-rolled server control that allows you to specify colgroup
...
public class ColGroupGridView : GridView
{
private ColGroup _ColGroup = null;
private ITemplate _ColGroupTemplate = null;
[TemplateContainer(typeof(ColGroup))]
public virtual ITemplate ColGroupTemplate
{
get { return _ColGroupTemplate; }
set { _ColGroupTemplate = value; }
}
protected override void CreateChildControls()
{
base.CreateChildControls();
_ColGroup = new ColGroup();
ColGroupTemplate.InstantiateIn(_ColGroup);
}
protected override void Render(HtmlTextWriter writer)
{
// Get the base class's output
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
base.Render(htw);
string output = sw.ToString();
htw.Close();
sw.Close();
// Insert a <COLGROUP> element into the output
int pos = output.IndexOf("<tr");
if (pos != -1 && _ColGroup != null)
{
sw = new StringWriter();
htw = new HtmlTextWriter(sw);
_ColGroup.RenderPrivate(htw);
output = output.Insert(pos, sw.ToString());
htw.Close();
sw.Close();
}
// Output the modified markup
writer.Write(output);
}
}
internal class ColGroup : WebControl, INamingContainer
{
internal void RenderPrivate(HtmlTextWriter writer)
{
writer.Write("<colgroup>");
base.RenderContents(writer);
writer.Write("</colgroup>");
}
}
使用像这样...
<custom:ColGroupGridView ... runat="server">
<ColGroupTemplate>
<col class="itemid" />
<col class="cover-image" />
<col class="title" />
<col class="number" />
<col class="year" />
<col class="rating" />
<col class="cgc-rating" />
<col class="description" />
</ColGroupTemplate>
<!-- Rest of stuff here... -->
</custom:ColGroupGridView>
来源:<一个href=\"http://www.wintellect.com/cs/blogs/jprosise/archive/2005/09/20/it-s-a-bit-of-a-hack-but.aspx\">Jeff Prosise的博客
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