我有一个gridview,过滤/排序功能正常工作。我的问题是onload,它在我的标题之后没有显示asc / desc图像。排序图像仅在单击任何标题后显示。任何帮助将不胜感激。
代码隐藏:
#region Sorting Arrows for Gridview Header
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Header)
{
foreach (TableCell tc in e.Row.Cells)
{
// search for the header link
LinkButton lnk = (LinkButton)tc.Controls[0];
if (tc.HasControls() && lnk != null && GridView1.SortExpression == lnk.CommandArgument)
{
// inizialize a new image
System.Web.UI.WebControls.Image img = new System.Web.UI.WebControls.Image();
// setting the dynamically URL of the image
img.ImageUrl = "~/Contents/Images/" + (GridView1.SortDirection == SortDirection.Ascending ? "asc" : "desc") + ".png";
// adding a space and the image to the header link
tc.Controls.Add(new LiteralControl(" "));
tc.Controls.Add(img);
//
}
}
}
}
#endregion
答案 0 :(得分:2)
我只是想出来..
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
Image img = new Image();
img.ImageUrl = "~/Contents/Images/asc.png";
GridView1.HeaderRow.Cells[1].Controls.Add(new LiteralControl(" "));
GridView1.HeaderRow.Cells[1].Controls.Add(img);
}
}
谢谢..