c# - 在 ASP.net GridView 中使列可编辑

Question

我有一个 GridView，其中一列用于显示它们将在我的网站前端显示的字段的显示顺序。无需进入编辑页面中的每条记录并必须以这种方式更改顺序，而是能够单击一个按钮并让整个 DisplayOrder (int) 可编辑，这样会更方便一些。如何才能做到这一点？

Answer 1

试试这个代码：

 <asp:ListBox ID="ListBox1" runat="server">
                <asp:ListItem>Manager1</asp:ListItem>
                <asp:ListItem>Manager2</asp:ListItem>
                <asp:ListItem>Manager3</asp:ListItem>
                <asp:ListItem>Manager4</asp:ListItem>
            </asp:ListBox>
            <asp:GridView ID="UserAllocationGrid" runat="server"
                AutoGenerateColumns="False">
            <Columns>

                <asp:BoundField DataField="Manager" HeaderText="Manager"
                    SortExpression="managers" />
                    <asp:TemplateField HeaderText="Allocation Percentage">
                    <ItemTemplate>
                        <asp:TextBox ID="TextBox1" runat="server"
                            Text= '<%# Bind("AllocationPercentage") %>' BorderStyle="None"></asp:TextBox>
                    </ItemTemplate>
                    </asp:TemplateField>

            </Columns>
            </asp:GridView>

代码背后

     void fillGV()
        {
            DataTable UserAllocationTable = new DataTable();

            UserAllocationTable.Columns.Add("Manager");
            UserAllocationTable.Columns.Add("AllocationPercentage");
            // go through listbox1 to find selected managers = selectedManagersList 
            List<string> selectedManagersListDates = new List<string>();
            int counterR = 0;
            foreach (ListItem strItem in ListBox1.Items)
            {                     
                    //selectedManagersListDates.Add(strItem.Value); 
                    DataRow drManagerName = UserAllocationTable.NewRow();
                    UserAllocationTable.Rows.Add(drManagerName);
                    UserAllocationTable.Rows[counterR]["Manager"] = strItem.Value;
                    counterR = counterR + 1;            
            }
           // ViewState["UserAllocationTable"] = UserAllocationTable;
            UserAllocationGrid.DataSource = UserAllocationTable;
            UserAllocationGrid.DataBind(); 
        }

在任何情况下都使用这个空白，我在按钮点击中做到了

      protected void Button1_Click(object sender, EventArgs e)
        {
            fillGV();

        }

Answer 2

You can try this using ShowDeleteButton="true" in asp commandfield you can make gridview edidable :-

<Columns>
     <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" ShowSelectButton="True" />
      <asp:BoundField DataField="ID" HeaderText="ID" ReadOnly="True" SortExpression="ID" />
      <asp:BoundField DataField="Name" HeaderText="Name"    SortExpression="Name" />
   </Columns>

可能会帮助你

Answer 3

你可以试试下面：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" AutoGenerateEditButton = "true">
       <Columns>
            <asp:BoundField DataField="prodId" HeaderText="Product Id" SortExpression="prodId" ReadOnly = "true" />
            <asp:BoundField DataField="prodQuantity" HeaderText="Quantity" 
                                SortExpression="prodQuantity" ReadOnly = "true" />
        </Columns>
</asp:GridView>

在Gridview水平设置AutoGenerateEditButton = "true"。这将使用户能够编辑行。在数据字段级别用于ReadOnly = "true"防止特定字段（行中）被编辑。

希望这可以帮助。

Answer 4

你可以试试这个，它会在列中给出文本框

    <asp:Label ID="DescriptionLabel" runat="server"
        Text='<%# Eval("Description") %>'></asp:Label>

    <asp:TextBox ID="Description" runat="server"
        Text='<%# Eval("Description") %>' Width="175px"
        visible="false"></asp:TextBox>

</ItemTemplate>

Answer 5

这个链接有我正在寻找的答案。如果您有自定义数据源，则必须处理 GridView 引发的每个编辑事件。就我而言：

Protected Sub gMaterias_RowCancelingEdit(sender As Object, e As GridViewCancelEditEventArgs) Handles gMaterias.RowCancelingEdit
    gMaterias.EditIndex = -1
    BindData()
End Sub

Protected Sub gMaterias_RowEditing(sender As Object, e As GridViewEditEventArgs) Handles gMaterias.RowEditing
    gMaterias.EditIndex = e.NewEditIndex
    BindData()
End Sub

Protected Sub gMaterias_RowUpdating(sender As Object, e As GridViewUpdateEventArgs) Handles gMaterias.RowUpdating
    lError.Visible = False
    lError.Text = ""
    Dim idMateria As Integer = e.Keys(0)
    Dim row As GridViewRow = gMaterias.Rows(e.RowIndex)
    Dim tbl As DataTable = Session("Materias")

    tbl.Rows(row.DataItemIndex)("universidad") = CType(gMaterias.Rows(e.RowIndex).Cells(5).Controls(0), TextBox).Text

    Dim calf = CType(gMaterias.Rows(e.RowIndex).Cells(6).Controls(0), TextBox).Text
    If IsNumeric(calf) Then
        tbl.Rows(row.DataItemIndex)("calificacion") = calf
    Else
        lError.Visible = True
        lError.Text = "La calificación no es válida"
    End If

    gMaterias.EditIndex = -1
    BindData()
End Sub