您好,我有一个名为 tableClass 的类,它存储一个名为 totalHours 的双变量。然后我想将此变量放在只读属性中。问题是 totalHours 的值不断重置为 0 。不确定我是否声明了变量错误,我也尝试将值存储在视图状态中,并且发生了同样的问题。有什么建议么?任何问题让我知道。谢谢!
表类
Public Class tableClass
Inherits System.Web.UI.Page
Private TotalHours As Double = 0
Private Sub AddNewRow(ByVal hrsTextBox as TextBox)
TotalHours = TotalHours + CDbl(hrsTextBox.Text)
End Sub
ReadOnly Property RegHours() As Double
'Returns the total hours so far recorded
Get
Return TotalHours
End Get
End Property
End Class
默认
Protected Sub btnAddDate_Click(sender As Object, e As EventArgs)
dim dateTable as New tableClass
dateTable.AddNewRow(hrsTextbox)
End Sub
Protected Sub HoursChange(sender As Object, e As EventArgs)
LabelHoursTotal.Text = (dateTable.RegHours + CDbl(TextBoxHours.Text)).ToString
End Sub
aspx
<asp:TextBox ID="txtHours" runat="server" width ="90" Text = "0" AutoPostBack="True" OnTextChanged ="HoursChange"></asp:TextBox>
<asp:Label id="lblHoursTotal" runat="server" Text = "0"></asp:Label>
<asp:Button ID="btnAddHour" runat="server" Text="Add New Row" OnClick="btnAddHour_Click" />