打印 HasMorePages 不起作用 c# [英] Printing HasMorePages not working c#
问题描述
好吧,所以我一直在环顾四周(在 SO 和 Google 上)看看一个问题是否可以解决我的错误,但显然不能,所以它是这样的:
Alright so I have been looking around (on SO and Google) to see if a question could solve my error but apparently not, so here it goes:
我正在尝试打印有时会超过一页的内容,我正在检查有多少页要打印.检查完所有这些逻辑后,我使用 HasMorePages
属性来设置是否有另一个页面.这是我的代码:
I am trying to print something that will sometimes have more than one page and I am checking how many pages there is to print. After checking all this logic, I use the HasMorePages
property to set if there is another page or not. This is my code:
int currentpage = 0;
int pagesleft = 0;
private void doc_PrintPage(object sender, PrintPageEventArgs ev)
{
ev.Graphics.Clear(Color.White);
int numofpages = (int)Math.Ceiling((double)(numofwords / 29.0));
numofpages = (int)Math.Ceiling((double)(numofwords / 29.0));
currentpage = currentpage + 1;
if(currentpage == 1)
{
pagesleft = numofpages;
}
if (numofwordsleft >= 29)
{
currentwords = 29;
}
else
{
currentwords = numofwordsleft;
}
Font f19 = new Font("Arial", (float)19);
Font f9 = new Font("Arial", (float)9);
ev.Graphics.DrawString("Pages: "+numofpages.ToString()+" Words: "+numofwords.ToString()+" "+currentwords.ToString(), f19, Brushes.Red, 200, 300);
ev.Graphics.DrawString("Words Left: "+numofwordsleft, f19, Brushes.Green, 200, 500);
ev.Graphics.DrawString("Pages: "+numofpages.ToString()+" Current Page: "+currentpage.ToString(), f19, Brushes.Blue, 200, 700);
numofwordsleft = numofwordsleft - currentwords;
pagesleft = pagesleft - 1;
//currentpage++;
//if (currentpage != numofpages && currentpage < numofpages && pagesleft > 0 && pagesleft != 0)
if(currentpage < numofpages)
{
ev.HasMorePages = true;
}
else
{
ev.HasMorePages = false;
}
}
现在一切正常,但是当我尝试打印不止一页时,它会打印 2 页.我做了一些调试,发现了这个:
Now everything works like it should, but when I try to print more than one page it prints 2 pages instead. I did some debugging and found this:
所以 HasMorePages
等于 false
所以它应该只打印 1 页.我按下了继续调试,它又在最后碰到了断点.由于我在开始时清除了页面,因此我只看到了第二页(在 printpreview
中),但是 printpreview
说只有 1 页,并且只有一页是显示的是第二个.
So HasMorePages
is equal to false
so it should only print 1 page. I pressed continue debugging and it hit the breakpoint at the end again. Since I clear the page at the beginning I was only seeing the second page (in a printpreview
) but the printpreview
said that there was only 1 page and the only page that was being displayed was the second one.
这是printpreview
:
对于蓝色文本,我正在这样做:
For the blue text I am doing this:
ev.Graphics.DrawString("Pages: "+numofpages.ToString()+" Current Page: "+currenpage.ToString(), ...);
打印预览清楚地表明它在第 1 页上.
And the print preview clearly says that it is on Page 1.
抱歉,帖子太长了,但我需要帮助.如果您能帮助我/指出解决此问题的正确方向,请在此处发帖.
Sorry for the long post but I need help. Please post here if you can help me/point me in the right direction to solving this.
谢谢!
所以当我尝试打印 2 页时,使用:
So when I try to print 2 pages, using:
int numofpages = Math.Ceiling(39.0 / 29.0);
它打印 3 页,但都在 PrintPreview
所示的同一页上,除非它不能正常工作.
It prints 3 pages but all on the same page as shown in PrintPreview
unless that isn't working properly.
推荐答案
试试这个
int currentpage = 0;
int pagesleft = 0;
int numofwordsleft = 0;
int currentwords = 0;//For testing
int numofwords = 120; // For testing
private void doc_PrintPage(object sender, PrintPageEventArgs ev)
{
ev.Graphics.Clear(Color.White);
int numofpages = (int)Math.Ceiling((double)(numofwords / 29.0));
numofpages = (int)Math.Ceiling((double)(numofwords / 29.0));
currentpage = currentpage + 1;
if (currentpage == 1)
{
pagesleft = numofpages;
}
if (numofwordsleft >= 29)
{
currentwords = 29;
}
else
{
currentwords = numofwordsleft;
}
Font f19 = new Font("Arial", (float)19);
Font f9 = new Font("Arial", (float)9);
ev.Graphics.DrawString("Pages: " + numofpages.ToString() + " Words: " + numofwords.ToString() + " " + currentwords.ToString(), f19, Brushes.Red, 200, 300);
ev.Graphics.DrawString("Words Left: " + numofwordsleft, f19, Brushes.Green, 200, 500);
ev.Graphics.DrawString("Pages: " + numofpages.ToString() + " Current Page: " + currentpage.ToString(), f19, Brushes.Blue, 200, 700);
numofwordsleft = numofwordsleft - currentwords;
pagesleft = pagesleft - 1;
//currentpage++;
//if (currentpage != numofpages && currentpage < numofpages && pagesleft > 0 && pagesleft != 0)
if (currentpage < numofpages)
{
ev.HasMorePages = true;
}
else
{
ev.HasMorePages = false;
}
}
希望这有帮助.这是我在更改字数后得到的预览.
hope this helps. This is the preview i am getting after changing number of words.
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