C＃從GRIDVIEW讀取數據串

Question

嗨我有一個GridView，我想以提取PhotoPath（ftppath +文件名（ftp://192.168.1.2/Jelly.jpg））

其在asp.net並且我不確定如何檢索數據。我將gridView設置爲可供選擇，並且我喜歡「選擇」將PhotoPath存儲在字符串中。

源

<asp:GridView ID="GridView1" runat="server" AllowSorting="True" 
     AutoGenerateColumns="False" DataKeyNames="StudentID" 
     DataSourceID="SqlDataSource1" Height="263px" Width="915px" 
     AllowPaging="True" CellPadding="4" ForeColor="#333333" GridLines="None" 
     onselectedindexchanged="GridView1_SelectedIndexChanged"> 
     <AlternatingRowStyle BackColor="White" /> 
     <Columns> 
      <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" 
       ShowSelectButton="True" /> 
      <asp:BoundField DataField="No" HeaderText="MatricNo" 
       SortExpression="MatricNo" /> 
      <asp:BoundField DataField="FirstName" HeaderText="FirstName" 
       SortExpression="FirstName" /> 
      <asp:BoundField DataField="LastName" HeaderText="LastName" 
       SortExpression="LastName" /> 
      <asp:BoundField DataField="Current" HeaderText="CurrentModules" 
       SortExpression="CurrentModules" /> 
      <asp:BoundField DataField="PhotoPath" HeaderText="PhotoPath" 
       SortExpression="PhotoPath" /> 
     </Columns> 
     <EditRowStyle BackColor="#2461BF" /> 
     <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" /> 
     <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" /> 
     <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" /> 
     <RowStyle BackColor="#EFF3FB" BorderColor="Blue" BorderStyle="Solid" 
      Font-Size="Small" /> 
     <SelectedRowStyle BackColor="#D1DDF1" BorderStyle="Solid" Font-Bold="True" 
      Font-Size="Small" ForeColor="#333333" HorizontalAlign="Center" /> 
     <SortedAscendingCellStyle BackColor="#F5F7FB" /> 
     <SortedAscendingHeaderStyle BackColor="#6D95E1" /> 
     <SortedDescendingCellStyle BackColor="#E9EBEF" /> 
     <SortedDescendingHeaderStyle BackColor="#4870BE" /> 
    </asp:GridView> 

我tryed這一點：

 protected void GridView1_SelectedIndexChanged(object sender, EventArgs e) 
    { 
     string PhotoPath; 
     GridView1.CurrentRow.Cells[0].Value.ToString(); 
    } 

但是當前行不是定義的一部分。

Answer 1

嘗試用

protected void GridView1_SelectedIndexChanging(object sender, EventArgs e) { 
    string PhotoPath = ""; 
    // Get the currently selected row. Because the SelectedIndexChanging event 
    // occurs before the select operation in the GridView control, the 
    // SelectedRow property cannot be used. Instead, use the Rows collection 
    // and the NewSelectedIndex property of the e argument passed to this 
    // event handler. 
    GridViewRow row = GridView1.Rows[e.NewSelectedIndex]; 

    PhotoPath = row.Cells[5].Text; 
} 

或

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e) { 
    string PhotoPath = ""; 
    GridViewRow row = GridView1.SelectedRow; 

    PhotoPath = row.Cells[5].Text; 
}