Question

我正在尝试创建一个网格视图，它将从我的数据库表中加载项目名称和项目成本，并有一个模板字段，用户可以输入他们购买的单位数量，最后有最后一个网格视图的列计算总数（单位成本*金额），但我是Web应用程序开发的新手，并且不确定如何使最后一部分发生。

那么，我如何编写网格视图列以将其他两列的模板字段相乘？

修改

好！对不起我之前没有任何信息......我现在有一些代码。我试图添加每行的列而不是总计。这是我到目前为止所拥有的

<asp:GridView ID="gvitemsList" runat="server" AutoGenerateColumns="False" DataSourceID="LinqDataSource1">
                <Columns>
                    <asp:BoundField DataField="itemDescription" HeaderText="Item" ReadOnly="True" SortExpression="itemDescription" />
                    <asp:TemplateField HeaderText="Quantity"><ItemTemplate><asp:TextBox runat="server" ID="txtQuantity" CssClass="mpprefixtextbox"></asp:TextBox></ItemTemplate></asp:TemplateField>
                    <asp:TemplateField HeaderText="Material"> <ItemTemplate>
                            <asp:Label ID="lblMat" runat="server" Text='<%#Bind("unitPrice")%>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="OH Amount"><ItemTemplate><asp:Label runat="server" ID="lblOverhead"></asp:Label></ItemTemplate></asp:TemplateField>
                     <asp:TemplateField HeaderText="Capital"><ItemTemplate><asp:Label runat="server" ID="lblCapital"></asp:Label></ItemTemplate></asp:TemplateField>
                </Columns>
            </asp:GridView>

代码隐藏

 Private Sub gvitemsList_RowDataBound(sender As Object, e As GridViewRowEventArgs) Handles gvitemsList.RowDataBound
    If e.Row.RowType = DataControlRowType.DataRow Then
        Dim txtQuantity As TextBox = DirectCast(e.Row.FindControl("txtQuantity"), TextBox)
        Dim lblMat As Label = DirectCast(e.Row.FindControl("lblMat"), Label)
        Dim lblCapital As Label = DirectCast(e.Row.FindControl("lblCapital"), Label)

        If (txtQuantity IsNot Nothing) AndAlso (lblMat IsNot Nothing) AndAlso (lblCapital IsNot Nothing) Then
            Dim lblMatValue As Integer = txtQuantity.Text + CInt(lblMat.Text)
            lblCapital.Text = lblMatValue.ToString()
            Dim eventHandler As String = String.Format("textBoxOnBlur('{2}', '{1}', '{4});", txtQuantity.ClientID, lblMat.ClientID, lblCapital.ClientID)
            txtQuantity.Attributes.Add("onblur", eventHandler)
        End If
    End If
End Sub

这是我的javascript

function textBoxOnBlur(txtQuantity, lblMaterials, lblCapital)
{
var textQuantity = document.getElementById(txtQuantity);
var labelMaterials = document.getElementById(lblMat);
var labelCapital = document.getElementById(lblCapital);

var textQuantity = parseInt(textQuantity.value);
var labelMaterials = parseInt(labelMaterials.value);

if ( isNaN(textQuantity) == true )
    textQuantity = 0;



   labelCapital.innerHTML = textQuantity + labelMaterials;
}

我首先得到一个错误，说无法将字符串转换为双倍...我认为我没想做，我对此非常陌生！

使用网格视图列可以将其他列与asp.NET相乘

0 个答案: