打印选定的索引项目

Question

我尝试打印选定的索引项目，但我无法成功。

你能帮我解决这个问题吗？

我在打印的页面上得到“-1”值。

Private Sub Textbox2_TextChanged(sender As Object, e As EventArgs) Handles TextBox2.TextChanged 

    Dim idx As Integer = ListBox1.FindStringExact(TextBox2.Text) 
        If idx <> -1 Then 
         ListBox1.SelectedIndex = idx 
         ListBox2.Items.Add(ListBox1.Text) 
         ListBox1.Items.Remove(TextBox2.Text) 
         PrintDoc.Print() 
    End sub 

Private Sub PrintDoc_PrintPage(ByVal sender As System.Object, ByVal e As Printing.PrintPageEventArgs) Handles PrintDoc.PrintPage 
     Dim drawfont As New Font("arial", 16) 
     Dim drawbrush As New SolidBrush(Color.Black) 
     e.Graphics.DrawString(ListBox1.SelectedIndex, drawfont, drawbrush, 100, 100) 
    End Sub 

Answer 1

http://watchmynewvideoxyz.blogspot.in/2017/02/user3900603-your-answer.html

去那里你的代码准备

如果确定让我+1