Question

我正在使用gridview。当我单击编辑按钮时，会出现更新和取消按钮。在修改来自EditItemTemplate的文本框中的值时，新值不会显示在事件处理程序rowupdating（）中，而是获取在呈现页面时显示的值。如何从这些文本框中获取新值并继续进行？这是代码。

<asp:GridView ID="GridView1" runat="server" AutoGenerateEditButton="true" AutoGenerateColumns="false" 
        AutoGenerateDeleteButton="true" onrowediting="GridView1_RowEditing" 
        onrowupdating="GridView1_RowUpdating">
    <Columns>


    <asp:TemplateField>
    <ItemTemplate>
        <asp:Label ID="lblId" runat="server" Text='<%# Eval("id") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="txtId" runat="server" Text='<%# Eval("id") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>

    <asp:TemplateField>
    <ItemTemplate>
        <asp:Label ID="lblName" runat="server" Text='<%# Eval("cpuname") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="txtName" runat="server" Text='<%# Eval("cpuname") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>

    <asp:TemplateField>
    <ItemTemplate>
        <asp:Label ID="lblStatus" runat="server" Text='<%# Eval("status") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate> 
      <asp:TextBox ID="txtStatus" runat="server" Text='<%# Eval("status") %>'></asp:TextBox>
     </EditItemTemplate>
    </asp:TemplateField>

    </Columns>


</asp:GridView>


protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
        {
            GridView1.EditIndex = e.NewEditIndex;
        }

        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            TextBox text = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtName");
        }

Answer 1

你应该在这里使用双向绑定。即绑定而不是Eval：

<asp:TextBox ID="txtId" runat="server" Text='<%# Bind("id") %>'></asp:TextBox>

以下是文档链接：

Data-Binding Expressions Overview

这是我背后的代码：

protected void Page_Load(object sender, EventArgs e)
    {
        DataTable table = new DataTable();
        table.Columns.Add("Data");
        for(int i = 0; i < 20; i++)
            table.Rows.Add(new object[] { i });
        GridView1.DataSource = table;
    if(!IsPostBack)  // <<<<<<<<<<<<
        GridView1.DataBind();
    }
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        GridView1.DataBind();
    }       

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        TextBox text = (TextBox)GridView1.Rows[e.RowIndex].FindControl("txtId");
    }

Answer 2

如果您已编写代码以在页面加载中绑定网格，请确保它包含在if(!IsPostBack)中我希望它有所帮助

Answer 3

试试这个

TextBox text = (TextBox)GridView1.Rows[e.EditIndex].FindControl("txtName");

Answer 4

这最终为我工作。

protected void MyGridView_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    string value = e.NewValues[0].ToString();
    // ...
}

Answer 5

我跟随柏拉图和它的工作！

将if(!IsPostBack)放在databind()之前，并在GridView1.DataBind();

中GridView1.EditIndex = e.NewEditIndex;之后插入GridView1_RowEditing

为什么GridView Rowupdating事件不捕获文本框的新值？

5 个答案: