Question

我的问题是，当我点击编辑时，文本框出现在所有列中，我写任何我想要更新，然后我点击更新按钮，行在数据库中更新，但在页面上它显示以前的值。请帮助

 <Columns>
<asp:TemplateField HeaderText="Email ID">
    <ItemTemplate>
        <asp:Label ID="Label1" ReadOnly="true" runat="server" Text='<%#Eval("EmailID")%>'></asp:Label>

    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("EmailID")%>'></asp:TextBox>

    </EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="First Name">
    <ItemTemplate>
       <asp:Label ID="Label2" runat="server" Text='<%#Eval("FirstName")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("FirstName")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Last Name">
    <ItemTemplate>
       <asp:Label ID="Label3" runat="server" Text='<%#Eval("LastName")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox3" runat="server" Text='<%#Eval("LastName")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Password">
    <ItemTemplate>
        <asp:Label ID="Label4" runat="server" Text='<%#Eval("Password")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox4" runat="server" Text='<%#Eval("Password")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="CurrentLocation">
    <ItemTemplate>
        <asp:Label ID="Label5" runat="server" Text='<%#Eval("CurrentLocation")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox5" runat="server" Text='<%#Eval("CurrentLocation")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Mobile No.">
    <ItemTemplate>
        <asp:Label ID="Label6" runat="server" Text='<%#Eval("MobileNo")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox6" runat="server" Text='<%#Eval("MobileNo")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>
 <asp:TemplateField HeaderText="Address">
    <ItemTemplate>
        <asp:Label ID="Label7" runat="server" Text='<%#Eval("Address")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox7" runat="server" Text='<%#Eval("Address")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Gender">
    <ItemTemplate>
        <asp:Label ID="Label8" runat="server" Text='<%#Eval("Gender")%>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:TextBox ID="TextBox8" runat="server" Text='<%#Eval("Gender")%>'></asp:TextBox>
    </EditItemTemplate>
</asp:TemplateField>

<asp:CommandField HeaderText="Edit" ShowEditButton="true"/>

代码背后的代码 -

protected void GridView1_Edit（object sender，GridViewEditEventArgs e） {

        GridView1.EditIndex = e.NewEditIndex;
        GridView1.DataBind();


    }

    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {

        GridView1.EditIndex = -1;

        GridView1.DataBind();
    }

    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {

        TextBox ac = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox1");
        TextBox a = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox2");
        TextBox b = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox3");
        TextBox c = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox4");
        TextBox d = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox5");
        TextBox k = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox6");
        TextBox f = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox7");
        TextBox g = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox8");

        ru.EmailID1=ac.Text;
        ru.FirstName1=a.Text;
        ru.LastName1=b.Text;
        ru.Password1=c.Text;
        ru.Location=d.Text;
        ru.MobileNo=k.Text;
        ru.Address=f.Text;
        ru.gender = g.Text;

Answer 1

您可以为gridview中的每个TextBox将EnableViewState属性设置为True。这将确保在页面回发后看到您在编辑模式下输入的值。此外，您可以将Eval更改为Bind，因为Eval是只读的，而Bind是双向的。

Answer 2

我认为您的问题是您没有更新DataSource的{{1}}，因此当您在网格上调用GridView时，它正在使用其在非网格中的数据更新数据源，因此出现“旧”值。

相反，一旦您成功将更改保存到数据库，然后执行查询数据库的逻辑以构建数据源，然后重新绑定网格，如下所示：

DataBind()

Answer 3

您可以使用Response.Redirect并在代码后插入它。

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{

    TextBox ac = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox1");
    TextBox a = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox2");
    TextBox b = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox3");
    TextBox c = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox4");
    TextBox d = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox5");
    TextBox k = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox6");
    TextBox f = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox7");
    TextBox g = (TextBox)GridView1.Rows[e.RowIndex].FindControl("TextBox8");

    ru.EmailID1=ac.Text;
    ru.FirstName1=a.Text;
    ru.LastName1=b.Text;
    ru.Password1=c.Text;
    ru.Location=d.Text;
    ru.MobileNo=k.Text;
    ru.Address=f.Text;
    ru.gender = g.Text;

    Response.Redirect("currentpage.aspx" + "?urlparam1=" + value1 + "&urlparam2=" + value2);

Answer 4

试一试：

protected void GridViewUser_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            try
            {
                var id = e.NewValues["Id"] + string.Empty;
                var login = e.NewValues["Login"] + string.Empty;
                var password = e.NewValues["Password"] + string.Empty;

                Validate(false,login, password);

                var dto = new UserDto();
                dto.Id = Convert.ToInt32(id);
                dto.Login = (login + string.Empty).Trim();
                dto.Password = password;
                _userBo.Save(dto);
                GridViewUser.EditIndex = -1;
            }
            catch (Exception ex)
            {
                Core.Util.Util.ShowPopUpMsg(this, "Erro não esperado: " + ex.Message);
            }
            finally
            {
                FillGrid();
            }


        }

gridview asp.net c＃onrowupdating

4 个答案: