查询.vb

这是本人设计的一个软件

Imports System.Data.SqlClient
Public Class 查询
    Inherits System.Windows.Forms.Form
    Dim sqlstr As String
#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.Button3 = New System.Windows.Forms.Button
        Me.Label1 = New System.Windows.Forms.Label
        Me.TextBox3 = New System.Windows.Forms.TextBox
        Me.Button2 = New System.Windows.Forms.Button
        Me.Label3 = New System.Windows.Forms.Label
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Label2 = New System.Windows.Forms.Label
        Me.TextBox1 = New System.Windows.Forms.TextBox
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.GroupBox1.SuspendLayout()
        Me.SuspendLayout()
        '
        'DataGrid1
        '
        Me.DataGrid1.Anchor = CType(((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(0, 0)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(352, 192)
        Me.DataGrid1.TabIndex = 0
        '
        'GroupBox1
        '
        Me.GroupBox1.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
                    Or System.Windows.Forms.AnchorStyles.Left) _
                    Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.GroupBox1.Controls.Add(Me.Button3)
        Me.GroupBox1.Controls.Add(Me.Label1)
        Me.GroupBox1.Controls.Add(Me.TextBox3)
        Me.GroupBox1.Controls.Add(Me.Button2)
        Me.GroupBox1.Controls.Add(Me.Label3)
        Me.GroupBox1.Controls.Add(Me.TextBox2)
        Me.GroupBox1.Controls.Add(Me.Button1)
        Me.GroupBox1.Controls.Add(Me.Label2)
        Me.GroupBox1.Controls.Add(Me.TextBox1)
        Me.GroupBox1.Location = New System.Drawing.Point(0, 208)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(352, 152)
        Me.GroupBox1.TabIndex = 8
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "请输入查询条件："
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(280, 111)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(56, 23)
        Me.Button3.TabIndex = 17
        Me.Button3.Text = "查询"
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(40, 118)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(104, 16)
        Me.Label1.TabIndex = 16
        Me.Label1.Text = "按专业查询查询："
        '
        'TextBox3
        '
        Me.TextBox3.Location = New System.Drawing.Point(144, 113)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(120, 21)
        Me.TextBox3.TabIndex = 15
        Me.TextBox3.Text = ""
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(280, 68)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(56, 23)
        Me.Button2.TabIndex = 14
        Me.Button2.Text = "查询"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(16, 75)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(128, 16)
        Me.Label3.TabIndex = 13
        Me.Label3.Text = "按电话号码查询查询："
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(144, 70)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(120, 21)
        Me.TextBox2.TabIndex = 12
        Me.TextBox2.Text = ""
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(280, 25)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(56, 23)
        Me.Button1.TabIndex = 11
        Me.Button1.Text = "查询"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(40, 32)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(104, 16)
        Me.Label2.TabIndex = 10
        Me.Label2.Text = "按宿舍编号查询："
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(144, 27)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(120, 21)
        Me.TextBox1.TabIndex = 9
        Me.TextBox1.Text = ""
        '
        '查询
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(352, 359)
        Me.Controls.Add(Me.GroupBox1)
        Me.Controls.Add(Me.DataGrid1)
        Me.Name = "查询"
        Me.Text = "查询"
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.GroupBox1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    '---------按房间编号查询--------
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        sqlstr = "select * from 人员管理 where 房间id='" & TextBox1.Text & "'"

        Dim mycom As New SqlCommand(sqlstr, mycon)
        mycon.Open()
        mycom.ExecuteNonQuery()
        mycon.Close()
        dbbd()

    End Sub



#Region "数据绑定代码,配合修改按钮实现,这是采用了前面的宿舍管理那一套东西"

    Sub dbbd()
        Dim myt As New DataTable

        Dim myad As New SqlDataAdapter(sqlstr, mycon)

        mycon.Open()
        myad.Fill(myt)
        mycon.Close()
        DataGrid1.DataSource = myt

        'btt_xg.Enabled = False
        'btt_del.Enabled = False

    End Sub
#End Region

    '------------按电话查询----------
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

        sqlstr = "select * from 宿舍管理 where 宿舍电话='" & TextBox2.Text & "'"

        Dim mycom As New SqlCommand(sqlstr, mycon)
        mycon.Open()
        mycom.ExecuteNonQuery()
        mycon.Close()
        dbbd()
    End Sub

    '----------按专业查询---------
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        sqlstr = "select * from 人员管理 where 专业='" & TextBox3.Text & "'"

        Dim mycom As New SqlCommand(sqlstr, mycon)
        mycon.Open()
        mycom.ExecuteNonQuery()
        mycon.Close()
        dbbd()
    End Sub
End Class