使用AutoGenerateColumns将HyperLinks绑定到GridView

Question

我有一个DataTable，它包含在运行时动态生成的列。此DataTable绑定到AutoGenerateColumns设置为true的GridView。我遇到了一个问题，因为DataTable中的一些数据是HyperLink对象，所以它显示的不是表中的实际链接，而是"System.Web.UI.WebControls.HyperLink“。

通常，我只会在GridView中使用HyperLinkField，但由于GridView的列是自动生成的，我不确定该如何做。有什么想法吗？

Answer 1

您可以动态添加新列，您只需隐藏自动生成的列即可。

对于此解决方案，您可以将超链接存储在2列中-1列用于链接，1列用于您想要显示的文本，或者如果您希望显示一些通用的内容(如“单击此处”)，您可以直接存储链接(例如“http://example.com.au/Default.aspx"”)。

protected void GridView1_RowBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.Header)
    {
        //add new header
        TableCell tc = new TableCell();
        tc.Text = "Groovy Link";
        e.Row.Cells.Add(tc);
        //hide original column that has been autobound - skip column we just added
        for (int i = 0; i < e.Row.Cells.Count - 1; i++)
        {
            BoundField field = (BoundField)((DataControlFieldCell)e.Row.Cells[i]).ContainingField;
            if (field.DataField == "AutoGeneratedColumnName")
                field.Visible = false;
        }
    }
    else if (e.Row.RowType == DataControlRowType.DataRow)
    {
        //create new tablecell
        TableCell tc = new TableCell();
        //do a check to see if the data is stored as a hyperlink in DB
        if (DataBinder.Eval(e.Row.DataItem, "AutoGeneratedColumnName").ToString().StartsWith("<a") == true)
        {
            //create hyperlink
            HyperLink hyp = new HyperLink();
            hyp.NavigateUrl = DataBinder.Eval(e.Row.DataItem, "AutoGeneratedColumnName").ToString();
            hyp.Text = "click here";
            tc.Controls.Add(hyp);
        }
        else
        {
            //just text
            tc.Text = DataBinder.Eval(e.Row.DataItem, "AutoGeneratedColumnName").ToString()
        }
        //add tablecell to row
        e.Row.Cells.Add(tc);
        //hide original column that has been autobound
        for (int i = 0; i < e.Row.Cells.Count - 1; i++)
        {
            BoundField field = (BoundField)((DataControlFieldCell)e.Row.Cells[i]).ContainingField;
            if (field.DataField == "AutoGeneratedColumnName")
                field.Visible = false;
        }
    }
}