Private Sub btnInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnInsert.Click
Dim myList As ListViewItem
Dim JmlList As Integer
Dim i As Integer
JmlList = lst_detail.Items.Count - 1
i = 0
myList = lst_detail.Items.Add(str(lst_detail.Items.Count + 1)) // error at this
myList.SubItems.Add(txtKodeObat.Text.Trim)
myList.SubItems.Add(txtNamaObat.Text.Trim)
myList.SubItems.Add(txtHarga.Text.Trim)
myList.SubItems.Add(txtQty.Text.Trim)
myList.SubItems.Add(txtJumlah.Text.Trim)
Dim subtotal As Double = 0
JmlList = lst_detail.Items.Count - 1
For i = 0 To JmlList
subtotal = subtotal + Val(lst_detail.Items(i).SubItems(5).Text)
Next
txtSubTotal.Text = Format(subtotal, "##########")
txtPPn.Text = Format(subtotal * 0.1, "##########")
txtTotal.Text = Val(txtSubTotal.Text) + Val(txtPPn.Text)
txtKodeObat.Text = ""
txtNamaObat.Text = ""
txtHarga.Text = "0"
txtQty.Text = ""
txtJumlah.Text = "0"
txtKodeObat.Focus()
End Sub
我在myList中= lst_detail.Items.Add遇到錯誤(STR(lst_detail.Items.Count + 1))未將對象引用設置爲對象的實例。 ListViewItem的VB.NET
我想從文本添加到列表項,但得到零誤差 我有填充該文本框
你有調試它?在運行代碼時,您是否可以將lst_detail或lst_detail.Items視爲null?因爲基於錯誤,其中一個對象似乎爲空。 – Sujith
我很好奇你爲什麼要在該行中加1 Count。 – hatchet
@hatchet計數或編號列 –