C# 如何在代码隐藏中从GridView访问选定的Boundfield值

我见过类似的问题，但没有一个答案能帮助我解决这个问题。 我有GridView和一个只读字段，如下所示

GridView:

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
              AutoGenerateColumns="False" DataKeyNames="projectID" 
              DataSourceID="SqlDataSource1" 
              EmptyDataText="There are no data records to display." 
              PageSize="5" OnRowUpdating="GridView1_RowUpdating">
  <Columns>
    <asp:CommandField ShowDeleteButton="True" ShowEditButton="True"/>
    <asp:BoundField DataField="prID" HeaderText="prID" SortExpression="prID"/>
    <asp:BoundField DataField="projectName" HeaderText="projectName" 
                    SortExpression="projectName" />
    <asp:BoundField DataField="projectType" HeaderText="projectType" 
                    SortExpression="projectType" />
  </Columns>
  <EditRowStyle CssClass="GridViewEditRow"/>
</asp:GridView>

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{

    GridViewRow row = GridView1.Rows[e.RowIndex];

    String d1 = ((TextBox)(row.Cells[2].Controls[0])).Text;
    String d2 = ((TextBox)(row.Cells[3].Controls[0])).Text;

    // this only works while the field is not readonly      
    string prIDUpdate = ((TextBox)(row.Cells[1].Controls[0])).Text; 

}

注意：我尝试过使用

GridView1.DataKeys[e.RowIndex]

和

onRowDataBound

设置BoundField，但我无法得到结果

---

提前谢谢

我看到您在GridView控件中的DataKeyNames设置如下

DataKeyNames="projectID"

那么我猜你的键名是projectID，而不是prID，不是吗？ 如果是这样，您可以获取所选行的数据，如下所示：

string id = GridView1.DataKeys[e.RowIndex]["projectID"].ToString();

您还应添加此列：

<asp:BoundField DataField="projectID" HeaderText="prID" SortExpression="projectID"/>

如果这没用，很抱歉

<Columns>
            <asp:TemplateField HeaderText="prID" SortExpression="prID">
                <ItemTemplate>
                    <asp:Label ID="lblPrId" runat="server" Text='<%# Bind("prID") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="projectName" HeaderText="projectName" 
                    SortExpression="projectName" />
            <asp:BoundField DataField="projectType" HeaderText="projectType" 
                    SortExpression="projectType" />
  </Columns>

Label lblPrId = row.FindControl("lblPrId") as Label;    
string prId = lblPrId .Text;