DataList中TextBox onfocus调用后台void静态方法及获取相应行数

<asp:DataList ID="dlItemGeneral" runat="server" CellPadding="0" CellSpacing="0" Width="100%" 
OnItemDataBound="dlItemGeneral_ItemDataBound"> 
<ItemTemplate> 
<asp:Table ID="Table1" runat="server" CssClass="table"> 
<asp:TableRow> 
<asp:TableCell CssClass="tableTemplateCell" Width="15%"> 
物料编码 <%# Eval("ItemCode") %> 
</asp:TableCell> 
<asp:TableCell CssClass="tableCell" Width="30%"> 
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> 
</asp:TableCell> 
<asp:TableCell CssClass="tableCell" Width="55%"> 
</asp:TableCell> 
</asp:TableRow> 
</asp:Table> 
</ItemTemplate> 
</asp:DataList>

protected void dlItemGeneral_ItemDataBound(object sender, DataListItemEventArgs e) 
{ 
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 
{ 
if (e.Item.FindControl("TextBox1") != null) 
{ 
TextBox textBox = e.Item.FindControl("TextBox1") as TextBox; 
textBox.Attributes.Add("OnFocus", "alert('" + GetRowNumber(e) + "'); this.value='" + GetTextBox(e) + "';"); 
} 
} 
} 
private static string GetRowNumber(DataListItemEventArgs e) 
{ 
return "当前行号为" + (e.Item.ItemIndex + 1).ToString(); 
} 
private static string GetTextBox(DataListItemEventArgs e) 
{ 
return "这是从静态方法获取值和当前行索引值为：" + e.Item.ItemIndex.ToString(); 
}