1.vb.net如何实现打印DataGridView1里的内容,求源码
2.Visual Basic .NETçç¼è¯
3.求用vbnet 实现先进先出即队列得源代码
vb.net如何实现打印DataGridView1里的cloud限流源码内容,求源码
使用 PrintDocument 控件的网站简约源码 Print() 方法可以打印指定对象中的内容,参考代码如下:Private Sub Button1_Click(ByVal sender As System.Object,dep分销源码 ByVal e As System.EventArgs) Handles Button1.ClickPrintDocument1.Print()
End Sub
Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
Dim bm As New Bitmap(Me.DataGridView1.Width, Me.DataGridView1.Height)
DataGridView1.DrawToBitmap(bm, New Rectangle(0, 0, Me.DataGridView1.Width, Me.DataGridView1.Height))
e.Graphics.DrawImage(bm, 0, 0)
End Sub
Visual Basic .NETçç¼è¯
.NETè¯è¨ï¼å æ¬VB.NETï¼å®ä»¬æå¼åçç¨åºæºä»£ç 并ä¸æ¯ç´æ¥ç¼è¯æè½å¤ç´æ¥å¨æä½ç³»ç»ä¸æ§è¡çäºè¿å¶æ¬å°ä»£ç ï¼èæ¯è¢«ç¼è¯æ为ä¸é´ä»£ç ï¼ç¶åéè¿.NET Frameworkçéç¨è¯è¨è¿è¡æ¶ï¼CLRï¼ââæ§è¡ããææç.Netç¼ç¨è¯è¨é½è¢«ç¼è¯æè¿ç§è¢«ç§°ä¸ºMSILï¼Microsoft Intermediate Language ï¼çä¸é´ä»£ç ï¼è¿ä¸Javaçåèç 类似ãå æ¤è½ç¶æç»çç¨åºå¨è¡¨é¢ä¸ä»ç¶ä¸ä¼ ç»æä¹ä¸çå¯æ§è¡æ件é½å ·æâ.exeâçåç¼åãä½æ¯å®é ä¸ï¼å¦æ计ç®æºä¸æ²¡æå®è£ .Net Frameworkï¼é£ä¹è¿äºç¨åºå°ä¸è½å¤è¢«æ§è¡ãå¨ç¨åºæ§è¡æ¶ï¼.Net Frameworkå°ä¸é´ä»£ç ç¿»è¯æ为äºè¿å¶æºå¨ç ï¼ä»è使å®å¾å°æ£ç¡®çè¿è¡ãæç»çäºè¿å¶ä»£ç 被åå¨å¨ä¸ä¸ªç¼å²åºä¸ãæ以ä¸æ¦ç¨åºä½¿ç¨äºç¸åç代ç ï¼é£ä¹å°ä¼è°ç¨ç¼å²åºä¸ççæ¬ãè¿æ ·å¦æä¸ä¸ª.Netç¨åºç¬¬äºæ¬¡è¢«è¿è¡ï¼é£ä¹è¿ç§ç¿»è¯ä¸éè¦è¿è¡ç¬¬äºæ¬¡ï¼é度ä¼ææ¾å å¿«ãVB.NET代ç ä¹æ以ä¸ç´æ¥ç¼è¯æäºè¿å¶æºå¨ç ï¼æ¯åºäº.NET跨平å°è¿ä¸ç®æ çèèã Visual Basic .NET
å¹´Visual Basic .NET é®ä¸ï¼æ¤åVisual Basic å å«å¨ Visual Studioå¥è£ ä¸ã该çæ¬å被称为VB 7.0ï¼æ¯ä¸C#ä¸èµ·å¨å¹´åå¸çæåå§çVB.netçæ¬ãC#æ¯ä¸é¨æ°è®¾è®¡.Netè¯è¨å¹¶ä¸è¯æ³ä¸åJavaæä¸å®çç¸ä¼¼æ§ï¼æ以被大åå®£ä¼ ä¸ºå¾®è½¯å¯¹ä»JAVAçççï¼åå°åªä½æåå ³æ³¨ãç¶èVB.NETåç¸å被é误å°è®¤ä¸ºä» ä» æ¯VBçä¸ä¸ªå级(æ ææ¶è¢«ç§°ä¸ºVB7)ï¼å®çåå ³æ³¨åº¦ä¹å æ¤è¾ä½ï¼å½ç¶VB社åºä»¥åå欢Basicç³»åé£æ ¼çè¯è¨ç人è¿æ¯å¾å ³æ³¨å®çãé£äºè¯ç¨è¿æ¤çVB.NETç人å¨å±å±å¹å¸ä¸åç°ä¸ä¸ªå¼ºå¤§å´è°æ·±çè¯è¨ãä¸è¿ä»»ä½ä¸ç§è¯è¨é½æ¯æå¼±ç¹çï¼å½ç¶åé¢è¿ä¸ç¹ä¹æ¯.NETè¯è¨çå ±æ§ï¼é£å°±æ¯è¿è¡ç计ç®æºä¸å¿ é¡»è£ ç¸åºçæ¬ç.Net frameworkã
Visual Basic .NET
该çæ¬æ¯å.NET Framework 1.1ä¸èµ·åå¸çãæ°åè½å æ¬å¯¹.NET Compact Frameworkçæ¯æåæ´å¥½çVBåè¿å导ã并æ¹è¿äºè¿è¡ç¶åµï¼IDE稳å®æ§(å°¤å ¶æ¯åå°ç¼è¯å¨)ï¼ä»¥åè¿è¡æ¶RunTime稳å®æ§ãå¦å¤ï¼VB.NETè¿æä¸ä¸ªå¦é¢çVisual Studio .NET Academic Edition (VSAE)ï¼å®æ¯ååç»åå½æäºå¦è å 费使ç¨ççæ¬ã
Visual Basic .NET
该çæ¬æ¯VB.Netçé大转åãä½æ¯è¿ä¸ªçæ¬ç Visual Studio ä»ç¶è¿æ¯é¢å .NET æ¡æ¶çï¼çæ¬2.0ï¼ãå®åæ¶ä¹è½å¼å跨平å°çåºç¨ç¨åºï¼å¦å¼å使ç¨å¾®è½¯æä½ç³»ç»çææºçç¨åºçãæ»ä½æ¥è¯´æ¯ä¸ä¸ªé常åºå¤§ç软件ï¼çè³å å«ä»£ç æµè¯åè½ã
Visual Basic .NET
Visual Basic äºå¹´2æ1æ¥åå¸ãéè¿å å¹´çåå±ï¼å®å·²æ为ä¸ç§ä¸ä¸åçå¼åè¯è¨åç¯å¢ãç¨æ·å¯ç¨ Visual Basic å¿«éå建 Windows ç¨åºï¼ç°å¨è¿å¯ä»¥ç¼åä¼ä¸æ°´å¹³ç客æ·/æå¡å¨ç¨åºå强大çæ°æ®åºåºç¨ç¨åºã
Visual Studio
Visual Studio äºå¹´4ææ¥ä¸å¸ï¼å ¶ä¸å å« Visual Basic .NET ãVisual Studioæ¯å¾®è½¯å ¬å¸æ¨åºçå¼åç¯å¢ãæ¯ç®åææµè¡çWindowså¹³å°åºç¨ç¨åºå¼åç¯å¢ãVisual Studio éæå¼åç¯å¢ï¼IDEï¼ççé¢è¢«éæ°è®¾è®¡åç»ç»ï¼åå¾æ´å ç®åæäºãVisual Studio åæ¶å¸¦æ¥äº NET Framework 4.0ãMicrosoft Visual Studio CTP( Community Technology Preview--CTP)ï¼å¹¶ä¸æ¯æå¼åé¢åWindows 7çåºç¨ç¨åºãé¤äºMicrosoft SQL Serverï¼å®è¿æ¯æ IBM DB2åOracleæ°æ®åºçã
Visual Studio
ä»è¯¥çæ¬å¼å§VB.NET已没æåç¬åå®çIDEäºï¼å¾®è½¯ç»Visual Basic .NET 以åC#å¼åè çIDEå°±åªæVisual Studio äºã该çæ¬å¢å äºmodernï¼åmetroï¼é£æ ¼çæ¯æçä¼å¤æ°ç¹æ§ã
Visual Studio
å¢å äºå¤§éæ°ç¹æ§ï¼æåä½ çç¼åæçã对ç¼è¯å¨åå¼åç¯å¢ä¼åï¼æé«ç¼è¯é度ï¼å¸®ä½ éæ代ç å解å³é误ãæææ¾ç项æ¹è¿è§åèèµæç Top Improvements in Visual Basic ã ä¸è½ç®å认为VB .netæ¯VBçæ°çæ¬ãé¦å å®ä»¬ä¸ä¸ªæ¯å®å ¨é¢å对象çè¯è¨ï¼èå¦ä¸ä¸ªä¸æ¯å®å ¨é¢å对象çï¼å ¶æ¬¡VB .NETæ¯æ建äº.Net frameworkä¹ä¸çãå½ç¶ï¼å®ä»¬åå±Basicç³»åè¯è¨ï¼åå为微软æå¼åï¼è¯æ³ä¸æä¸å®çç¸ä¼¼æ沿è¢æ¯å¾æ£å¸¸çï¼ä½ä¸è½å æ¤è®¤ä¸ºVB .NETæ¯VBçå级çã
对äºæ³ä»VB转å°VB .NETçå¼åè æ¥è¯´ï¼å¦æä½ åªæ¯å欢Basicç³»åè¯è¨ç代ç é£æ ¼ï¼é£ä¹ä½ çè¿ç§»ä¼å¾é¡ºå©ï¼å¦æä½ æ³æ²¿è¢ä¹åVBçç¼ç¨ææ³åä¹ æ¯ï¼ä½ ä¼å¾è¦æ¼ï¼åå ä¹ä¸å°±æ¯VB .NET贯穿çæ¯å®å ¨é¢å对象çææ³ï¼èVBä¸æ¯ã
微软为使VBå¼åè æ´å®¹æ转å°VB .NETï¼å ¼å®¹ä¸äºVB6å½æ°ååºçç¨æ³ï¼ä½æ¯æ¯ä¸ä¸.NETè¯è¨ä¸èªå¸¦çå¯æ¿æ¢çå½æ°ååºæ¥å¾é«æï¼æ以æ们åºè¯¥å°½é使ç¨.NETä¸çæ°æ¹æ³ã微软è¿æä¾äºVBå°VB .NETçèªå¨è½¬æ¢å¨ï¼è½å ç»æ¹è¿ï¼ä½ä»æ æ³è½¬æ¢å ¨é¨ä»£ç ï¼å ä¹ææéå°åç¨åºé½éè¦äººå·¥ä¿®æ¹ä»¥å®æç¼è¯ã为äºè¿è¡ä¼åï¼å¤§å¤ç¨åºéè¦å¤§éå·¥ä½å»éæã
äºè®®ä¸è§£éï¼è®¸å¤èµæ·±çVBç¨åºåæ±æ¨VB .NETï¼å 为VB .NET丢æäºè®¸å¤ä¸ååè¡çVB6ä¸ä½¿ç¨ç大éè¯è¨constructsåç¨æ·çé¢åè½ï¼å¹¶ä¸å¯¹ä¿çä¸æ¥çä¸è¥¿ä¹æ¹åäºè¯æãå ¶å®ä¸åºè¯¥åæVBåVB .NETååè½ä¸çæ¯è¾ï¼å 为å®ä»¬é¤äºæäºè¯æ³ç¸ä¼¼å¤ï¼å¯ä»¥è¯´æ¯å®å ¨ä¸åç两ç§è¯è¨ã
Visual Basic .NETä¸VBé½ä»£è¡¨äºBasicç³»åè¯è¨çç¼ç é£æ ¼ï¼Visual Basic .NETæ¯è¿ç§ç¼ç é£æ ¼å¨.NETå¹³å°ä¸ç继æ¿ï¼èä¸æ¯åç³»åè¯è¨VBç沿è¢ã
è¯è¨é©å½
* å¹´4æï¼Visual Basicè¯çï¼Visual Basic 1.0 Windowsçæ¬åå¸ãè¿ä¸ªè¿æ¥ç¼ç¨è¯è¨åç¨æ·çé¢çè¿æ¥è¢«ç§°ä¸ºTripodï¼æäºæ¶åå«åRubyï¼ï¼æåç设计æ¯ç±é¿å °Â·åºçï¼Alan Cooperï¼å®æçã å¹´9æï¼Visual Basic 1.0 DOSçæ¬åå¸ã
* å¹´å¤å¤©ï¼VB6.0åå¸ã
* å¹´ï¼Visual Basic .NETå.NET Frameworkåå¸ãVisual Basic .NETæ£å¼è¯çã
* å¹´ï¼å¾®è½¯å®£å¸å°ä¸ä¼å对é.NETçæ¬çVBè¿è¡æ¯æã
*å¹´ï¼Visual Basic .NETéVisual Studio åå¸ï¼ä¸åæä¾åç¬çVisual Basic .NET IDEã MONOå¼åå¹³å°æä¾äºä¸ä¸ªVB.NETç¹æ§åº(VB.NET-specific libraries)并çæç åä¸ä¸ªç¼è¯å¨åWindows Forms GUI åºãç±äºåæ¹é¢çåå ï¼VB.NETå¼åçå¼æºå·¥å ·è¾C#åå±å¾æ ¢ä¸äºã
求用vbnet 实现先进先出即队列得源代码
VB.Net中的队列类在System.Collections.Generic命名空间中,名字叫Queue,类似宝塔源码是搜索类源码一个泛型类。
实例化该类:
Dim myQueue As Queue<Int>
myQueue = new Queue<Int>();
然后可以通过Queue中的Enqueue和Dequeue函数进行入队出队操作:
With myQueue
.Enqueue(1)
.Enqueue(2)
.Enqueue(3)
.Enqueue(4)
.Enqueue(5)
End With
For i = 0 To 5 Step 1
Console.WriteLine(myQueue.Dequeue())
Next i
显示结果:
1
2
3
4
5