1.设置从Model中的Sub Main 启动
2.程序结构
3.Model1
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Imports System.Windows.Forms.Application
Module Module1
Sub Main()
'form1 是测试多文档窗口
'Dim frm1 As New Form1()
'frm1.Show()
Dim formStudentSysMain As New FormStudentSysMain()
formStudentSysMain.Show()
Do While True
DoEvents()
Loop
End Sub
End Module
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4.FormStudentSysMain.vb
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Imports System.Data.SqlClient
Public Class FormStudentSysMain
Public DBConnstr As String = "Data Source=LJJ-FF\LJJ;Initial Catalog=TestMvc;User ID=sa;Password=111111"
Private Sub quitMenuItem_Click(sender As Object, e As EventArgs) Handles quitMenuItem.Click
End
End Sub
Private Sub selectinfoMenuItem_Click(sender As Object, e As EventArgs) Handles selectinfoMenuItem.Click
Dim formSearchStudent As New FormSearchStudent
formSearchStudent.MdiParent = Me
formSearchStudent.WindowState = FormWindowState.Normal
formSearchStudent.Show()
End Sub
Private Sub updateinfoMenuItem1_Click(sender As Object, e As EventArgs) Handles updateinfoMenuItem1.Click
Dim formStudentInfo As New FormStudentInfo
FormSearchStudent.MdiParent = Me
FormSearchStudent.WindowState = FormWindowState.Normal
formStudentInfo.Show()
End Sub
Private Sub importscoreMenuItem_Click(sender As Object, e As EventArgs) Handles importscoreMenuItem.Click
Dim formStudentCourse As New FormStudentCourse
FormSearchStudent.MdiParent = Me
FormSearchStudent.WindowState = FormWindowState.Normal
formStudentCourse.Show()
End Sub
Private Sub cascadeMenuItem_Click(sender As Object, e As EventArgs) Handles cascadeMenuItem.Click
Me.LayoutMdi(MdiLayout.Cascade)
End Sub
Private Sub horizonMenuItem_Click(sender As Object, e As EventArgs) Handles horizonMenuItem.Click
Me.LayoutMdi(MdiLayout.TileHorizontal)
End Sub
Private Sub verticalMenuItem_Click(sender As Object, e As EventArgs) Handles verticalMenuItem.Click
Me.LayoutMdi(MdiLayout.TileVertical)
End Sub
Private Sub FormStudentSysMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
End Class
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5.FormSearchStudent.vb
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Imports System.Data.SqlClient
Public Class FormSearchStudent
Private Sub Label1_Click(sender As Object, e As EventArgs) Handles Label1.Click
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim sqlConStr As String = My.Forms.FormStudentSysMain.DBConnstr
Dim sqlStr As String = "select * from student "
Dim sqlDataAdapter As New SqlDataAdapter
Dim dataSet As New DataSet
Dim sqlConnection As New SqlConnection(sqlConStr)
If Trim(txtName.Text) <> "" Then
sqlStr = sqlStr & "where name like '%" & Trim(txtName.Text) & "%'"
End If
sqlDataAdapter.SelectCommand = New SqlCommand(sqlStr, sqlConnection)
sqlConnection.Open()
sqlDataAdapter.Fill(dataSet)
sqlConnection.Close()
DataGridView1.DataSource = dataSet.Tables(0)
End Sub
Private Sub FormSearchStudent_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
End Class
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6.运行结果
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