发布后 - 输入字符串格式不正确

Question

当我在Visual Studio 2013上运行我的代码时，它运行正常，但是当我尝试发布的版本时，它给了我这个错误：

  

输入字符串的格式不正确

代码：

Protected Sub LinkButton22_Click(sender As Object, e As EventArgs) Handles LinkButton22.Click
        Dim RowNo As Integer = 0
        Dim NumberOfRows As Integer = GridView1.Rows.Count
        Dim dates As List(Of DateTime) = DirectCast(Session("SelectedDates"), List(Of DateTime))
        Dim list As New List(Of Integer)

        For i = 0 To dates.Count - 1
            list.Add(Convert.ToInt32(dates.Item(i).ToString.Remove(2)))
        Next

        For i = 0 To NumberOfRows - 1
            For z = 0 To list.Count - 1
                If GridView1.Rows(i).Cells(4).Text = list.Item(z) Then
                    Dim Project As TextBox = GridView1.Rows(i).Cells(3).FindControl("txtPrj")
                    Project.Text = ddlProject.SelectedItem.Text
                    Exit For
                End If
            Next
        Next

        dates.Clear()
        Session("SelectedDates") = dates

        Calendar1.SelectedDates.Clear()
    End Sub