vb.net入门控件,vb常用控件介绍

初学vb.net做了一个控件但是放在窗体上不能响应键盘事件

1.

创新互联专注于企业全网整合营销推广、网站重做改版、贺州网站定制设计、自适应品牌网站建设、H5页面制作、商城网站定制开发、集团公司官网建设、外贸营销网站建设、高端网站制作、响应式网页设计等建站业务，价格优惠性价比高，为贺州等各大城市提供网站开发制作服务。

窗体有一个属性

pressview(在

杂项

的倒数第二个)

；

2.

这个属性可以指示：是否从窗体接收键盘的输入

3.

将其设置为

true

，窗体就可以接受键盘事件了

4.

然后通过委托

或者

调用子控件里面的函数过程

就可以实现键盘事件参数的传递，完成你所需要的功能了！

5.

望采纳~

vb.net怎么使用表格控件？

DataGridView控件，放一个DataGridView1和Button1到窗体，下面是按钮下代码

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Me.DataGridView1.AllowUserToAddRows = False

DataGridView1.RowTemplate.Height = 200

DataGridView1.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.None

For i = 1 To 3

Me.DataGridView1.Columns.Add("列" i.ToString, "列" i.ToString)

Me.DataGridView1.Rows.Add()

Next

Me.DataGridView1.Columns(0).Width = 100

Me.DataGridView1.Columns(1).Width = 500

Me.DataGridView1.Columns(0).Width = 300

End Sub

'自己设置相关需要的属性即可

vb.net 的Tabcontrol的用法？

vb.net入门——分组控件：TabControl的使用

h t t p : // e d u . c n z z . c n / N e w s I n f o / 1 0 8 9 9. a s p x

VB.net中的控件

用datagridview

排序的话datagridview自身的功能就能实现

你说的标签如果是指双击或者单击或者右击有相应的反应的话

需要在后台编写相应事件

操作还是比较方便的

求VB.net datagrid 控件的使用方法（入门级）

Dim tab1 As String

Dim DS As New DataSet

Dim SqlStr As String

Dim DTS_A As New DataGridTableStyle

Dim Col_A1, Col_A2, Col_A3 As New DataGridTextBoxColumn

Dim Col_bo As New DataGridBoolColumn

'DS.Tables("tab1").Columns.Add("check", System.Type.GetType("System.Boolean"))

'DS.Tables("tab1").Columns("check").DefaultValue = False

Dim Col_A() As DataGridColumnStyle = {Col_bo, Col_A1, Col_A2, Col_A3}

'主窗口

Private Sub fICitem_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

ProgressBar1.Hide()

grdStyles("tab1")

SQLConn(conn)

Dim i As Integer

'Dim arr As New ArrayList

SqlStr = "SELECT ID, diqu, dname FROM a_diqu Order by ID"

If Not SQLFill(conn, DA, DS, SqlStr, "diqu") Then

MsgBox("服务器连接失败")

Else

Dim dr As DataRow

For Each dr In DS.Tables("diqu").Rows

'arr.Add(dr("diqu") "." dr("dname"))

cmbDiqu.Items.Add(dr("diqu") "." dr("dname"))

Next

End If

'cmbDiqu.DataSource = arr

cmbDiqu.SelectedIndex = -1

cmbDiqu.Text = ""

End Sub

'DataGrid格式

Private Sub grdStyles(ByVal tab As String)

Dim ii1 As Integer

Dim DTS_A1() As String = {"check", "fshortnumber", "fnumber", "fplanprice"}

Dim DTS_A2() As String = {"检查框", "货号", "上市月份", "单价"}

Dim DTS_A3() As Integer = {50, 120, 120, 120} '长度

Dim DTS_A4() As Integer = {2, 0, 2, 1} '对齐方式

DTS_A.MappingName = tab

DTS_A.GridColumnStyles.Clear()

DTS_A.AllowSorting = True

DTS_A.ReadOnly = True

DTS_A.BackColor = Color.DarkGray

DTS_A.AlternatingBackColor = Color.LightGray

For ii1 = 0 To DTS_A1.Length - 1

Col_A(ii1).MappingName = DTS_A1(ii1)

Col_A(ii1).HeaderText = DTS_A2(ii1)

Col_A(ii1).Width = DTS_A3(ii1)

Col_A(ii1).NullText = ""

Col_A(ii1).Alignment = DTS_A4(ii1)

Next

DTS_A.GridColumnStyles.AddRange(Col_A)

grdItem.TableStyles.Add(DTS_A)

grdItem.ReadOnly = True

End Sub

Private Sub fICitem_Closed(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Closed

SQLClose(conn)

End Sub

'显示表单

Private Sub Show1()

grdStyles("tab1")

txtNum.Text = Trim(txtNum.Text)

grdItem.DataSource = Nothing

SQLStr = "select * from t_icitem_new"

SQLStr = " where fshortnumber like '" txtNum.Text "%'"

SQLStr = " order by fshortnumber"

SQLFill(conn, DA, DS, SQLStr, tab1)

grdItem.CaptionText = "货号资料"

grdItem.DataSource = DS.Tables(tab1)

ShowRow()

End Sub

'数据同步显示

Private Sub ShowRow()

Dim dr As DataRow

If DS.Tables(tab1).Rows.Count 0 Then

If grdItem.CurrentRowIndex DS.Tables(tab1).Rows.Count Then

grdItem.CaptionText = grdItem.CurrentRowIndex + 1 "/" DS.Tables(tab1).Rows.Count

dr = DS.Tables(tab1).Rows(grdItem.CurrentRowIndex)

txtNum.Text = dr.Item("fshortnumber")

txtPrice.Text = dr.Item("fplanprice")

cmbMonth.Text = dr.Item("fnumber")

Else

txtNum.Text = ""

txtPrice.Text = ""

cmbMonth.Text = ""

End If

Else

txtNum.Text = ""

txtPrice.Text = ""

cmbMonth.Text = ""

End If

End Sub

Private Sub grdItem_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdItem.CurrentCellChanged

ShowRow()

End Sub

'鼠标选定行

Private Sub grdItem_CurrentCellChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdItem.CurrentCellChanged

ShowRow()

End Sub

Private Sub btn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _

Handles btnSelect.Click, btnUpdate.Click, btnInsert.Click, btnDelete.Click

Select Case sender.name

Case "btnSelect" '查询

Show1()

Case "btnUpdate" '修改

SUpdate()

Case "btnInsert" '新增

SInsert()

Case "btnDelete" '删除

SDelete()

End Select

End Sub

'修改

Private Sub SUpdate()

txtNum.Text = Trim(txtNum.Text)

txtPrice.Text = Trim(txtPrice.Text)

If MsgBox("确定更新？", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then

SQLStr = "UPDATE t_icitem_new SET "

SQLStr = "fnumber='" cmbMonth.SelectedItem "', "

SQLStr = "fplanprice='" txtPrice.Text "' "

SQLStr = "WHERE fshortnumber='" txtNum.Text "'"

If Not SQLFill2(conn, SQLStr) Then

MsgBox("抱歉，更新失败:(")

End If

Show1()

End If

End Sub

'新增

Private Sub SInsert()

txtNum.Text = Trim(txtNum.Text)

txtPrice.Text = Trim(txtPrice.Text)

If MsgBox("确定新增？", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then

SQLStr = "SELECT fshortnumber "

SQLStr = "FROM t_icitem_new "

SQLStr = "WHERE fshortnumber = '" txtNum.Text "' "

SQLFill(conn, DA, DS, SQLStr, "Tmp")

If DS.Tables("Tmp").Rows.Count = 0 Then '如果没有资料则新增

SQLStr = "INSERT INTO t_icitem_new (fshortnumber,fnumber,fplanprice) VALUES("

SQLStr = "'" txtNum.Text "', "

SQLStr = "'" cmbMonth.SelectedItem "', "

SQLStr = "'" txtPrice.Text "')"

If Not SQLFill2(conn, SQLStr) Then

MsgBox("抱歉，新增失败:(")

End If

Show1()

Else

MsgBox("资料已存在")

End If

End If

End Sub

'删除

Private Sub SDelete()

txtNum.Text = Trim(txtNum.Text)

txtPrice.Text = Trim(txtPrice.Text)

If MsgBox("确定删除" txtNum.Text "？", MsgBoxStyle.YesNo + MsgBoxStyle.DefaultButton2) = MsgBoxResult.Yes Then

SQLStr = "DELETE FROM t_icitem_new "

SQLStr = "WHERE fshortnumber='" txtNum.Text "'"

If Not SQLFill2(conn, SQLStr) Then

MsgBox("抱歉，删除失败:(")

End If

Show1()

End If

'键盘顺序

Private Sub txt_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) _

Handles txtFshop.KeyDown, txtItem.KeyDown

Select Case e.KeyCode

Case Keys.Return

SendKeys.Send("{TAB}")

Case Keys.Right

SendKeys.Send("{TAB}")

Case Keys.Left

SendKeys.Send("+{TAB}")

Case Keys.Down

SendKeys.Send("{TAB 10}")

Case Keys.Up

SendKeys.Send("+{TAB 10}")

End Select

End Sub

VB.NET 如何做 控件

用vs.net创建控件项目，其他的和vb类似...

新建项目-windows 窗体控件库

当前题目：vb.net入门控件,vb常用控件介绍
文章转载：https://www.cdcxhl.com/article0/dsehpoo.html

成都网站建设公司_创新互联，为您提供App开发、网站内链、小程序开发、网站设计、网页设计公司、企业网站制作

广告

声明：本网站发布的内容（图片、视频和文字）以用户投稿、用户转载内容为主，如果涉及侵权请尽快告知，我们将会在第一时间删除。文章观点不代表本网站立场，如需处理请联系客服。电话：028-86922220；邮箱：631063699@qq.com。内容未经允许不得转载，或转载时需注明来源： 创新互联