从CodeBehind访问EditItemTemplate

Question

与EditItemTemplate打交道时，我遇到了问题。

我尝试做的是更新我的TextBox txt_name，但是我不能获得用户输入的内容，我在代码隐藏中获得了旧的值。

我是不是遗漏了什么？

前端代码

<asp:GridView ID="GridView_account" runat="server" AutoGenerateColumns="false" ShowFooter="True"
    OnRowCancelingEdit="GridView_account_RowCancelingEdit" OnRowEditing="GridView_account_RowEditing"
    OnRowUpdating="GridView_account_RowUpdating" OnRowCommand="GridView_account_RowCommand"
    OnRowDeleting="GridView_account_RowDeleting" OnSelectedIndexChanged="GridView_account_SelectedIndexChanged"
    DataKeyNames="UID" Height="110px" Width="497px">
    <Columns>
        <asp:TemplateField HeaderText="UID" SortExpression="UID">
            <ItemTemplate>
                <asp:Label ID="label_accid" runat="server" Text='<%# Bind("UID") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="User Name (required)" SortExpression="NyA">
            <EditItemTemplate>
                <asp:TextBox ID="txt_name" runat="server" Text='<%# Bind("NyA") %>'/>
            </EditItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="txt_newname" runat="server"></asp:TextBox>
            </FooterTemplate>
            <ItemTemplate>
                <asp:Label ID="label_name" runat="server" Text='<%# Bind("NyA") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Email Address (required)" SortExpression="eMail">
            <EditItemTemplate>
                <asp:TextBox ID="txt_email" runat="server" Text='<%# Bind("eMail") %>'></asp:TextBox>
            </EditItemTemplate>
            <FooterTemplate>
                <asp:TextBox ID="txt_newemail" runat="server"></asp:TextBox>
            </FooterTemplate>
            <ItemTemplate>
                <asp:Label ID="label_email" runat="server" Text='<%# Bind("eMail") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Options" ShowHeader="False">
            <EditItemTemplate>
                <asp:LinkButton ID="LinkButton_update" runat="server" CausesValidation="True" CommandName="Update"
                    Text="Update"></asp:LinkButton>
                <asp:LinkButton ID="LinkButton_cancel" runat="server" CausesValidation="False" CommandName="Cancel"
                    Text="Cancel"></asp:LinkButton>
                <asp:LinkButton ID="LinkButton_delete" runat="server" CausesValidation="False" CommandName="Delete"
                    Text="Delete"></asp:LinkButton>
            </EditItemTemplate>
            <FooterTemplate>
                <asp:LinkButton ID="LinkButton_addnew" runat="server" CausesValidation="False" CommandName="AddNew"
                    Text="Add New"></asp:LinkButton>
            </FooterTemplate>
            <ItemTemplate>
                <asp:LinkButton ID="LinkButton_edit" runat="server" CausesValidation="False" CommandName="Edit"
                    Text="Edit"></asp:LinkButton>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Manage Role" ShowHeader="False">
            <ItemTemplate>
                <asp:LinkButton ID="Selectbtn" runat="server" CausesValidation="False" CommandName="Select"
                    Text="Select"></asp:LinkButton>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

代码隐藏

protected void GridView_account_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    user u = Business.GetUser(((Label)GridView_account.Rows[e.RowIndex].FindControl("label_accid")).Text);
    //HERE'S MY PROBLEM!
    u.fullname = ((TextBox)GridView_account.Rows[e.RowIndex].FindControl("txt_name")).Text;
    //txt_name is returning the old value and not the one the user has input recently.

    Business.UpdateUser(u);
    GridView_account.EditIndex = -1;
    fillgridview();
}//

Answer 1

在绑定网格时，您是否检查页面是否为IsPostback？如果是回发，则不需要在Page_Load中重新绑定它，否则将丢失新值，因为Page Init和Page Load事件发生在其他事件之前，例如网格更新事件。

Answer 2

也许你在每个page_load事件上都绑定了你的网格。如果是这样的话，你需要这样的东西：

 protected void Page_Load(object sender, EventArgs e)
 {
    if(!Page.IsPostBack)
    {
       GridView_account.DataSource = "data source";
       GridView_account.DataBind();
    }
 }

或者用来代替

 if(!Page.IsPostBack) 

您可以使用

 if (GridView_account.EditIndex == -1)

这将检查网格是否处于编辑模式。如果网格未处于编辑模式，则可以将网格与数据源绑定。