vb点虐 dc的简单介绍
VB点虐 将图片选入内存dc
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Dim bt As Bitmap = New Bitmap(456, 456)
Dim dcObject As Integer = bt.GetHbitmap().ToInt32()
vb点虐 对固定坐标取色
Using b As New Bitmap(1, 1)
Using g As Graphics = Graphics.FromImage(b)
g.CopyFromScreen(New Point(300, 300), New Point, New Size(1, 1))
PictureBox1.BackColor = b.GetPixel(0, 0)
End Using
End Using
复制当前屏幕左上角位置(300,300)的一个点,取其颜色
vb点虐 中怎么根据日期算出是周几呢?
Public Function IsRunnian(ByVal n As Integer) As Boolean
Dim res As Boolean
res = False
If n Mod 400 = 0 Then
res = True
End If
If (n Mod 100 0) And (n Mod 4 = 0) Then
res = True
End If
IsRunnian = res
End Function
Public Function Fc(ByVal td As Date) As Byte
Dim y As Integer
Dim m As Integer
Dim d As Integer
Dim yc As Integer
Dim mc As Integer
Dim dc As Integer
y = Year(td)
m = Month(td)
d = Day(td)
dc = d
If IsRunnian(y) Then
mc = Val(Mid("512503514624", m, 1))
Else
mc = Val(Mid("622503514624", m, 1))
End If
yc = ((y Mod 100) \ 4 + (y Mod 100)) Mod 7
Fc = (yc + mc + dc) Mod 7
End Function
Vb.NET行数据转换成列数据
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
DataGridView1.Columns.Clear()
DataGridView1.DataSource = GetDateTable("1|2|3,张三|李四|王五,1111111|2222222|3333333", "编号|姓名|卡号")
End Sub
Function GetDateTable(ByVal s As String, ByVal TabNames As String) As DataTable
Dim tb As New DataTable
Dim ss() As String = s.Split(",")
Dim tc() As String = TabNames.Split("|")
Dim c As Integer
For Each i As String In ss
Dim ts() As String = i.Split("|")
Dim dc As DataColumn
If c tc.Length Then
dc = New DataColumn(tc(c))
Else
dc = New DataColumn
End If
tb.Columns.Add(dc)
For j As Integer = 0 To ts.Length - 1
If j tb.Rows.Count - 1 Then
tb.Rows.Add(tb.NewRow)
End If
tb.Rows(j)(dc) = ts(j)
Next
c += 1
Next
Return tb
End Function
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