today study_2005.2.25

时间:2007-08-21 21:21:13  来源:  作者:
English study
navigate: v. 1.航行 2.驾驶 
A single dimension array
dimension:  n. 1.尺寸,尺度 2.维(数) 3.容积,面积
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 SettingsAll UsersDocumentsMy PicturesSample PicturesSunset.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

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