GridView mouseover 的高亮

由于dotnet中获得到的RowStyle中color为System.Drawing.Color类的,所以首先需要将其转换成HTML能够接受的#xxxxxx形式。写了一个函数:

string toWebColor(System.Drawing.Color theColor)
{
  if (Convert.ToString(theColor.R, 16) == "0" && Convert.ToString(theColor.G, 16) == "0"
    && Convert.ToString(theColor.B, 16) == "0")
  {
    return "#ffffff";
  }
  else
  {
    return "#" + Convert.ToString(theColor.R, 16) + Convert.ToString(theColor.G, 16)
      + Convert.ToString(theColor.B, 16);
  }
}

下边的程序就是个间隔行设置Attribute的行为:

if (e.Row.RowType == DataControlRowType.DataRow)
{
  if (e.Row.RowState == DataControlRowState.Normal)
  {
    e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='orange'");
    e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='" +
      toWebColor(GridView.RowStyle.BackColor) + "'");
  }
  else if (e.Row.RowState == DataControlRowState.Alternate)
  {
    e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='orange'");
    e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='" +
      toWebColor(GridView.AlternatingRowStyle.BackColor) + "'");
  }
  else
  {
    return;
  }
}

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