打印来自db的账单记录的C＃窗体我试过这个，但是，错误？ [英] Print C# windows form for bill records from db I tried this but, error?

问题描述

这是关于理疗mgt系统的c＃windows应用程序，我想通过特定联系号打印关于患者P_name，疼痛，访问次数，总次数和total_paid的帐单。因为它是独一无二的，所以我打印窗体。我做了如下但是，点击事件有错误。

 printButton.Click + = new EventHandler（printButton.Click） ; 

错误：System.Windows.Form.Control.Click可以只出现在+ =或 - =



左侧的代码如下。





crt_usr是我开发代码的形式。



有一些错误和错误请指导，先生，如果我错了告诉我正确的方法关于上面定义的打印账单。提前谢谢



我的尝试：



public void crt_user（）

{

printButton.Text =Print;

printButton.Click + = new EventHandler（printButton.Click）;

pd.PrintPage + = new PrintPageEventHandler（pd_PrintPage）;

this.Controls.Add（printButton）;

}

public void printButton_Click（object sender，EventArgs e）

{

Capturescreen（）;

pd.Print（）;

}

位图memoryimage;

private void Capturescreen（）

{

Graphics myGraphics = this.CreateGraphics（）;

Size s = this.Size;

memoryimage = new Bitmap（s.Width，s.Height，myGraphics）;

图形memoryGraphics = Graphics.FromImage（memoryimage）;

memoryGraphics.CopyFromScreen（this.Location.X，this.Location.Y，0,0，s）;



}

private void pd_PrintPage（System.Object sender，System.Drawing.Printing.PrintPageEventArgs e）

{

e.Graphics.DrawImage（memoryimage，0,0）;

}

public static void Main（）

{

Application.Run（new crt_usr（））;

}

解决方案

从MSDN复制并粘贴时：如何：打印Windows窗体 [ ^ ]确保不要将_替换为。是个好主意。 ...



有更好的方法可以做到这一点：一种是直接打印表单 - 这实际上并不困难，Visual Basic中有一个类电源包为您完成： PrintForm Class （Microsoft.VisualBasic。 PowerPacks.Printing） [ ^ ]

但更好的方法是正确完成工作，并使用PrintDocument Class（System.Drawing.Printing） [ ^ ]这意味着用户只获取他的信息需要，而不是按钮等等 - 以及任何滚动页面信息也可以打印。该链接包含一个简单示例。

this is c# windows application about physiotherapy mgt system , i want to print bill about patient P_name,pain,no.of visit,total_charge and total_paid by particular contact no. because it's unique so, i print windows form. i did as following but, there is error in click event.

printButton.Click += new EventHandler(printButton.Click);

Error: "System.Windows.Form.Control.Click" can only appear on left hand side of += or -=

the code as follow.


crt_usr is form when i developed code.

there is some mistake and error please guide, sir, if i wrong tell me right way for print bill about define above. thank you in advance

What I have tried:

public void crt_user()
{
printButton.Text = "Print";
printButton.Click += new EventHandler(printButton.Click);
pd.PrintPage += new PrintPageEventHandler(pd_PrintPage);
this.Controls.Add(printButton);
}
public void printButton_Click(object sender, EventArgs e)
{
Capturescreen();
pd.Print();
}
Bitmap memoryimage;
private void Capturescreen()
{
Graphics myGraphics = this.CreateGraphics();
Size s = this.Size;
memoryimage = new Bitmap(s.Width, s.Height, myGraphics);
Graphics memoryGraphics = Graphics.FromImage(memoryimage);
memoryGraphics.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, s);

}
private void pd_PrintPage(System.Object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
e.Graphics.DrawImage(memoryimage, 0, 0);
}
public static void Main()
{
Application.Run(new crt_usr());
}

解决方案

When you copy and paste from MSDN: How to: Print a Windows Form[^] it's a good idea to make sure you don't replace "_" with "." ...

There are better ways to do this: one is to print the form directly - which isn't actually difficult, there is a class in the Visual Basic Power packs to do it for you: PrintForm Class (Microsoft.VisualBasic.PowerPacks.Printing)[^]
But a better way is to do the job properly, and use the PrintDocument Class (System.Drawing.Printing)[^] which means the user gets only the information he needs, and not the buttons and so forth as well - and any "scrolled off the page" information can be printed as well. The link includes a simple example.

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