gridview 给排序字段添加箭头

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (e.Row.RowType == DataControlRowType.Header)//如果是表头，则执行如下操作

{

foreach (TableCell tc in e.Row.Cells)

{

//这种方法直接新加一个控件，也可以换成图片

if (tc.Controls.Count > 0)//这里要判断一下此时是不是已经生成了linkbutton

{

string s1 = ((LinkButton)tc.Controls[0]).Text;

//样式Webdings是123都有自己对应的图片

((LinkButton)tc.Controls[0]).Text = s1.Replace(s1, s1 + "<font face='Webdings'>5</font>");

//倒序的样式

if (tc.Controls.Count > 0 && tc.Controls[0].GetType().ToString() == "System.Web.UI.WebControls.DataControlLinkButton")

{

if (((LinkButton)tc.Controls[0]).CommandArgument.ToString() == ViewState["OrderField"].ToString())

{

string s2 = ((LinkButton)tc.Controls[0]).Text;

if (ViewState["OrderDire"].ToString() == "DESC")

{

((LinkButton)tc.Controls[0]).Text = s2.Replace("5", "6");

}

}

}

}

}

}

if (e.Row.RowType == DataControlRowType.DataRow)

{

e.Row.Attributes["style"] = "cursor:pointer;";

}

}