我遇到了麻烦,无法解决问题
我正在尝试单击一个按钮然后让用户在文本框7和8中键入输入,然后重复使用文本框7和8来获取接下来的两个值,并且一旦完成该行就完成了该行被绘制......
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
Dim myPen As New System.Drawing.Pen(System.Drawing.Color.Red)
Dim formGraphics As System.Drawing.Graphics
Dim x1 As Integer
Dim y1 As Integer
Dim x2 As Integer
Dim y2 As Integer
x1 = TextBox7.Text
y1 = TextBox8.Text
'clears textbox values...
TextBox7.Text = ""
TextBox8.Text = ""
'set focus to textbox7...
TextBox7.Focus()
x2 = TextBox7.Text
y2 = TextBox8.Text
formGraphics = Me.CreateGraphics()
formGraphics.DrawLine(myPen, x1, y1, x2, y2)
myPen.Dispose()
formGraphics.Dispose()
End Sub
目前,在点击按钮之前需要首先填充文本框,我想要它反过来..
任何人都知道怎么做?
ussing VB.net ...
答案 0 :(得分:0)
是否要处理textbox textchanged事件,以便每当文本框中的文本发生更改时,检查它是否符合条件?
您还需要将代码分解为几个不同的子例程