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vb.net數(shù)據(jù)集設(shè)計器 vbnet數(shù)據(jù)庫

我說的是vb當中,想要添加date environment 設(shè)計器,已經(jīng)引用這個設(shè)計器但是沒找到它

date environment 是 數(shù)據(jù)環(huán)境設(shè)計器,不知道你是VB60還是VB.Net,如果是VB60,現(xiàn)在基本上沒有人使用了,因為它好像只支持 Access 95 及以下的數(shù)據(jù)庫,現(xiàn)在誰還使用 95 及以下的 Office。如果是 VB.Net ,雖然添加了“數(shù)據(jù)環(huán)境設(shè)計器”,但沒有連接到數(shù)據(jù)庫,當然不行了。

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VB.net怎么訪問數(shù)據(jù)集?我是VS2019的。

可用ado.net訪問。

換電腦數(shù)據(jù)還在要求有服務(wù)器,要么是局域網(wǎng)內(nèi)一臺服務(wù)器,要么是公網(wǎng)服務(wù)器。

我的vb.net2010項目的窗體設(shè)計器沒有了怎么辦啊,代碼都在!求求大家給

PublicClassSimpleCalculatorInheritsSystem.Windows.Forms.Form#Region"Windows窗體設(shè)計器生成的代碼"PublicSubNew()MyBase.New()'該調(diào)用是Windows窗體設(shè)計器所必需的。InitializeComponent()'在InitializeComponent()調(diào)用之后添加任何初始化EndSub'窗體重寫處置以清理組件列表。ProtectedOverloadsOverridesSubDispose(ByValdisposingAsBoolean)IfdisposingThenIfNot(componentsIsNothing)Thencomponents.Dispose()EndIfEndIfMyBase.Dispose(disposing)EndSub'Windows窗體設(shè)計器所必需的PrivatecomponentsAsSystem.ComponentModel.IContainer'注意:以下過程是Windows窗體設(shè)計器所必需的'可以使用Windows窗體設(shè)計器修改此過程。'不要使用代碼編輯器修改它。FriendWithEventsLabel1AsSystem.Windows.Forms.LabelFriendWithEventsTextBox1AsSystem.Windows.Forms.TextBoxFriendWithEventsButton1AsSystem.Windows.Forms.ButtonFriendWithEventsButton2AsSystem.Windows.Forms.ButtonFriendWithEventsButton3AsSystem.Windows.Forms.ButtonFriendWithEventsButton4AsSystem.Windows.Forms.ButtonFriendWithEventsButton5AsSystem.Windows.Forms.ButtonFriendWithEventsButton6AsSystem.Windows.Forms.ButtonFriendWithEventsButton7AsSystem.Windows.Forms.ButtonFriendWithEventsButton8AsSystem.Windows.Forms.ButtonFriendWithEventsButton9AsSystem.Windows.Forms.ButtonFriendWithEventsButton10AsSystem.Windows.Forms.ButtonFriendWithEventsButton11AsSystem.Windows.Forms.ButtonFriendWithEventsButton12AsSystem.Windows.Forms.ButtonFriendWithEventsButton13AsSystem.Windows.Forms.ButtonFriendWithEventsButton14AsSystem.Windows.Forms.ButtonFriendWithEventsButton15AsSystem.Windows.Forms.ButtonFriendWithEventsButton16AsSystem.Windows.Forms.ButtonPrivateSubInitializeComponent()Me.Label1=NewSystem.Windows.Forms.LabelMe.TextBox1=NewSystem.Windows.Forms.TextBoxMe.Button1=NewSystem.Windows.Forms.ButtonMe.Button2=NewSystem.Windows.Forms.ButtonMe.Button3=NewSystem.Windows.Forms.ButtonMe.Button4=NewSystem.Windows.Forms.ButtonMe.Button5=NewSystem.Windows.Forms.ButtonMe.Button6=NewSystem.Windows.Forms.ButtonMe.Button7=NewSystem.Windows.Forms.ButtonMe.Button8=NewSystem.Windows.Forms.ButtonMe.Button9=NewSystem.Windows.Forms.ButtonMe.Button10=NewSystem.Windows.Forms.ButtonMe.Button11=NewSystem.Windows.Forms.ButtonMe.Button12=NewSystem.Windows.Forms.ButtonMe.Button13=NewSystem.Windows.Forms.ButtonMe.Button14=NewSystem.Windows.Forms.ButtonMe.Button15=NewSystem.Windows.Forms.ButtonMe.Button16=NewSystem.Windows.Forms.ButtonMe.SuspendLayout()''Label1'Me.Label1.Location=NewSystem.Drawing.Point(16,16)Me.Label1.Name="Label1"Me.Label1.Size=NewSystem.Drawing.Size(48,16)Me.Label1.TabIndex=0Me.Label1.Text="結(jié)果:"''TextBox1'Me.TextBox1.Location=NewSystem.Drawing.Point(64,8)Me.TextBox1.Name="TextBox1"Me.TextBox1.Size=NewSystem.Drawing.Size(120,21)Me.TextBox1.TabIndex=1Me.TextBox1.Text=""''Button1'Me.Button1.Location=NewSystem.Drawing.Point(200,8)Me.Button1.Name="Button1"Me.Button1.Size=NewSystem.Drawing.Size(56,24)Me.Button1.TabIndex=2Me.Button1.Text="清空"''Button2'Me.Button2.Location=NewSystem.Drawing.Point(48,56)Me.Button2.Name="Button2"Me.Button2.Size=NewSystem.Drawing.Size(24,24)Me.Button2.TabIndex=3Me.Button2.Text="1"''Button3'Me.Button3.Location=NewSystem.Drawing.Point(88,56)Me.Button3.Name="Button3"Me.Button3.Size=NewSystem.Drawing.Size(24,24)Me.Button3.TabIndex=4Me.Button3.Text="2"''Button4'Me.Button4.Location=NewSystem.Drawing.Point(136,56)Me.Button4.Name="Button4"Me.Button4.Size=NewSystem.Drawing.Size(24,24)Me.Button4.TabIndex=5Me.Button4.Text="3"''Button5'Me.Button5.Location=NewSystem.Drawing.Point(48,88)Me.Button5.Name="Button5"Me.Button5.Size=NewSystem.Drawing.Size(24,24)Me.Button5.TabIndex=6Me.Button5.Text="4"''Button6'Me.Button6.Location=NewSystem.Drawing.Point(88,88)Me.Button6.Name="Button6"Me.Button6.Size=NewSystem.Drawing.Size(24,24)Me.Button6.TabIndex=7Me.Button6.Text="5"''Button7'Me.Button7.Location=NewSystem.Drawing.Point(136,88)Me.Button7.Name="Button7"Me.Button7.Size=NewSystem.Drawing.Size(24,24)Me.Button7.TabIndex=8Me.Button7.Text="6"''Button8'Me.Button8.Location=NewSystem.Drawing.Point(48,120)Me.Button8.Name="Button8"Me.Button8.Size=NewSystem.Drawing.Size(24,24)Me.Button8.TabIndex=9Me.Button8.Text="7"''Button9'Me.Button9.Location=NewSystem.Drawing.Point(88,120)Me.Button9.Name="Button9"Me.Button9.Size=NewSystem.Drawing.Size(24,24)Me.Button9.TabIndex=10Me.Button9.Text="8"''Button10'Me.Button10.Location=NewSystem.Drawing.Point(136,120)Me.Button10.Name="Button10"Me.Button10.Size=NewSystem.Drawing.Size(24,24)Me.Button10.TabIndex=11Me.Button10.Text="9"''Button11'Me.Button11.Location=NewSystem.Drawing.Point(48,152)Me.Button11.Name="Button11"Me.Button11.Size=NewSystem.Drawing.Size(24,24)Me.Button11.TabIndex=12Me.Button11.Text="0"''Button12'Me.Button12.Location=NewSystem.Drawing.Point(176,56)Me.Button12.Name="Button12"Me.Button12.Size=NewSystem.Drawing.Size(24,24)Me.Button12.TabIndex=13Me.Button12.Text="+"''Button13'Me.Button13.Location=NewSystem.Drawing.Point(176,88)Me.Button13.Name="Button13"Me.Button13.Size=NewSystem.Drawing.Size(24,24)Me.Button13.TabIndex=14Me.Button13.Text="-"''Button14'Me.Button14.Location=NewSystem.Drawing.Point(176,120)Me.Button14.Name="Button14"Me.Button14.Size=NewSystem.Drawing.Size(24,24)Me.Button14.TabIndex=15Me.Button14.Text="*"''Button15'Me.Button15.Location=NewSystem.Drawing.Point(176,152)Me.Button15.Name="Button15"Me.Button15.Size=NewSystem.Drawing.Size(24,24)Me.Button15.TabIndex=16Me.Button15.Text="/"''Button16'Me.Button16.Location=NewSystem.Drawing.Point(88,152)Me.Button16.Name="Button16"Me.Button16.Size=NewSystem.Drawing.Size(72,24)Me.Button16.TabIndex=17Me.Button16.Text="計算"''SimpleCalculator'Me.AutoScaleBaseSize=NewSystem.Drawing.Size(6,14)Me.ClientSize=NewSystem.Drawing.Size(264,190)Me.Controls.Add(Me.Button16)Me.Controls.Add(Me.Button15)Me.Controls.Add(Me.Button14)Me.Controls.Add(Me.Button13)Me.Controls.Add(Me.Button12)Me.Controls.Add(Me.Button11)Me.Controls.Add(Me.Button10)Me.Controls.Add(Me.Button9)Me.Controls.Add(Me.Button8)Me.Controls.Add(Me.Button7)Me.Controls.Add(Me.Button6)Me.Controls.Add(Me.Button5)Me.Controls.Add(Me.Button4)Me.Controls.Add(Me.Button3)Me.Controls.Add(Me.Button2)Me.Controls.Add(Me.Button1)Me.Controls.Add(Me.TextBox1)Me.Controls.Add(Me.Label1)Me.Name="SimpleCalculator"Me.Text="簡單計算器"Me.ResumeLayout(False)EndSub#EndRegionPrivateSubTextBox1_TextChanged(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)EndSubPrivateSubTextBox1_TabStopChanged(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)EndSubPrivateSubButton2_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton2.ClickDimbtnAsButton'按鈕類型的變量btn=sender'把產(chǎn)生該事件的按鈕對象賦值給btnTextBox1.Text=TextBox1.Text+btn.Text'把該按鈕的Text屬性值連接到TextBox1中EndSubPrivateSubButton3_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton3.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton4_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton4.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton5_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton5.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton6_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton6.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton7_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton7.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton8_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton8.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton9_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton9.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton10_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton10.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton11_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton11.ClickDimbtnAsButtonbtn=senderTextBox1.Text+=btn.TextEndSubPrivateSubButton12_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton12.ClickDimbtnAsButtonbtn=sender'在文本框的Text屬性后連接一個空格、本按鈕的Text屬性值和一個空格TextBox1.Text=TextBox1.Text+""+btn.Text+""EndSubPrivateSubButton1_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton1.ClickTextBox1.Text=""'清空文本框EndSubPrivateSubButton13_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton13.ClickDimbtnAsButtonbtn=senderTextBox1.Text=TextBox1.Text+""+btn.Text+""EndSubPrivateSubButton14_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton14.ClickDimbtnAsButtonbtn=senderTextBox1.Text=TextBox1.Text+""+btn.Text+""EndSubPrivateSubButton15_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton15.ClickDimbtnAsButtonbtn=senderTextBox1.Text=TextBox1.Text+""+btn.Text+""EndSubPrivateSubButton16_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton16.Click'發(fā)生錯誤轉(zhuǎn)移到標號“ErrorPro”指定的行去執(zhí)行錯誤處理程序OnErrorGoToErrorProDimrAsDecimal'保存計算結(jié)果的變量DimtAsString=TextBox1.Text'用于保存文本框中的算術(shù)表達式DimspaceAsInteger=t.IndexOf("")'搜索空格位置,如果沒有空格,返回值為0'字符串的取子符方法,第二個參數(shù)小于0,則將產(chǎn)生錯誤號為5的異常,即過程參數(shù)不正確Dims1AsString=t.Substring(0,space)'通過取子串方法獲得第一個運算數(shù)DimopAsString=t.Substring(space+1,1)'通過取子串方法獲得運算符Dims2AsString=t.Substring(space+3)'通過取子串方法獲得第二個運算數(shù)Dimarg1,arg2AsIntegerarg1=Val(s1):arg2=Val(s2)SelectCaseopCase"+":r=arg1+arg2Case"-":r=arg1-arg2Case"*":r=arg1*arg2Case"/":r=arg1/arg2CaseElseMsgBox("輸入的運算符有誤!")ExitSubEndSelectTextBox1.Text=CStr(r)'顯示結(jié)果ExitSub'退出過程ErrorPro:'錯誤處理程序塊SelectCaseErr.NumberCase6'除數(shù)為零時,或運算溢出時的錯誤號MsgBox("算術(shù)運算溢出!",,"溢出提示")TextBox1.Focus()ExitSubCase5'Substring過程的參數(shù)不符合要求的錯誤號MsgBox("必須輸入運算符和第二個運算數(shù)!",,"運算數(shù)少")ExitSubCaseElse'其它情況顯示錯誤號和錯誤原因MsgBox("錯誤號為"Err.NumberChr(10)Chr(13)"錯誤原因:"Err.Description)ExitSubEndSelectEndSubEndClass

如何在vb中添加數(shù)據(jù)環(huán)境設(shè)計器

數(shù)據(jù)環(huán)境設(shè)計器用于在設(shè)計時創(chuàng)建ADO對象,它為數(shù)據(jù)訪問提供了一個交互式環(huán)境。

一、數(shù)據(jù)環(huán)境設(shè)計器的使用

1、引用

工程à引用àMicrosoft Data Environments 1.0

2、添加一個DataEnvironments

工程à更多Activex設(shè)計器à Data Environment

二、數(shù)據(jù)環(huán)境Data Environment對象中的Connecttion對象

1、一個Data Environments至少包含一個Connection對象;

2、每個Connection表示連接到一個數(shù)據(jù)庫,相當于在設(shè)計ADO控件的連接字符串;

3、右鍵選Connection屬性后,用設(shè)置連接字符串的方法來設(shè)置Connection的屬性。

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