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A single dimension array
dimension:
DataTable , DataRow, DataColumn ---------How to use.
Dim table_user As DataTable
Dim col_Id As DataColumn
Dim col_UserName As DataColumn
Dim row1 As DataRow
Try
table_user = New DataTable("userTable")
col_Id = New DataColumn("id", Type.GetType("System.Int32"))
col_UserName = New DataColumn("userName", Type.GetType("System.String"))
table_user.Columns.Add(col_Id)
table_user.Columns.Add(col_UserName)
row1 = table_user.NewRow
row1("id") = 123
row1("username") = "zhuxinbin"
table_user.Rows.Add(row1)
DataGrid1.DataSource = table_user
Catch ex As Exception
MessageBox.Show(ex.Message)
End Try
从流读取图片到picturebox.txt
Dim bin As Stream
Try
bin = New FileStream("C:\Documents and Settings\All Users\Documents\My Pictures\Sample Pictures\Sunset.jpg", FileMode.Open)
'PictureBox1.Image = PictureBox1.Image.FromStream(bin)'?里容易出?
PictureBox1.Image = Image.FromStream(bin)'??方式比?好
PictureBox1.Refresh()'don't need
Catch ex As Exception
MessageBox.Show(ex.Message)
Finally
bin.Close()
End Try