C # Code dialog Control implementation (open, save, change font, color, print function)

Printing | controls

Open it:

private void Openfiledialogbtn_click (object sender, System.EventArgs e) {
OpenFileDialog openfiledialog=new OpenFileDialog ();
openfiledialog.initialdirectory= "c:\\"; note that when you write the path here, you use c:\\ instead of c:openfiledialog.filter= text file |*.*| C # file |*.cs| all Files |*.* ";
Openfiledialog.restoredirectory=true;
Openfiledialog.filterindex=1;
if (Openfiledialog.showdialog () ==dialogresult.ok)
{fname=openfiledialog.filename;
File Fileopen=new file (fName);
Isfilehavename=true;
Richtextbox1.text=fileopen.readfile ();
Richtextbox1.appendtext ("");
} }

Save:

private void Saveasdialogbtn_click (object sender, System.EventArgs e)
{SaveFileDialog savefiledialog=new savefiledialog ();
savefiledialog.filter= text File |*.*| C # file |*.cs| all Files |*.* ";
savefiledialog.filterindex=2;
Savefiledialog.restoredirectory=true;
if (Savefiledialog.showdialog () ==dialogresult.ok)
{if (Savefiledialog.showdialog () ==dialogresult.ok)
{fname=savefiledialog.filename;
File Fsaveas=new file (fName);
Isfilehavename=true; file://saved a file with a name
Fsaveas.writefile (richTextBox1.Text);
} }
}

Change font Size

private void Fontdialogbtn_click (object sender, System.EventArgs e)
{FontDialog fontdialog=new fontdialog ();
Fontdialog.color=richtextbox1.forecolor;
Fontdialog.allowscriptchange=true;
Fontdialog.showcolor=true;
if (Fontdialog.showdialog ()!=dialogresult.cancel)
{richtextbox1.selectionfont=fontdialog.font;//Changes the currently selected text to a font
} }

Change the font color:

private void Colordialogbtn_click (object sender, System.EventArgs e)
{ColorDialog colordialog=new colordialog ();
Colordialog.allowfullopen=true;
Colordialog.fullopen=true;
Colordialog.showhelp=true;
colordialog.color=color.black;//initializes the font color in the current text box, and when the user clicks the Cancel button in the ColorDialog dialog box
file://Restore the original value
Colordialog.showdialog ();
Richtextbox1.selectioncolor=colordialog.color;
}

Print:

private void Printdocument_printpage (object sender, System.Drawing.Printing.PrintPageEventArgs e)
{float linesperpage=0;//the line number of the page
float ypos=0;//The portrait position of the printed string
int count=0;//line counter
Float LeftMargin =e.marginbounds.left ;//left margin
float topmargin=e.marginbounds.top;//top margin
string line=null;//line string
Color clr= richtextbox1.selectioncolor;//the current print color in my program does not implement a different color printing
SolidBrush b =new SolidBrush (CLR);//Brushes
fnt= richtextbox1.selectionfont;//the current print font
LINESPERPAGE=E.MARGINBOUNDS.HEIGHT/FNT. GetHeight (e.graphics); The number of rows to print per page
file://one page line by line
while (count*fnt. GetHeight (E.graphics));
E.graphics.drawstring (line,fnt,b,leftmargin,ypos,new StringFormat ());
count++;
} file://If the page is printed and the line is not empty, there are still unfinished pages, and the next print event is issued,
file://in the next print Linereader automatically reads the last item that was not printed. Linereader can record the current read position
if (line!=null)
E.hasmorepages=true;
else
E.hasmorepages=false;
}

private void Printpreviewbtn_click (object sender, System.EventArgs e)
{Linereader = new StringReader (richTextBox1.Text);
Try
{PrintPreviewDialog printpreviewdialog1=new printpreviewdialog ();
Printpreviewdialog1.document=printdocument;
PRINTPREVIEWDIALOG1.FORMBORDERSTYLE=FORMBORDERSTYLE.FIXED3D;
Printpreviewdialog1.showdialog (this);
catch (Exception excep)
{MessageBox.Show (EXCEP). Message, "Print error", MessageBoxButtons.OK, Messageboxicon.error);
Return
} }

private void Printdialogbtn_click (object sender, System.EventArgs e)
{PrintDialog printdialog=new PrintDialog ();
Printdialog.document=printdocument;
if (Printdialog.showdialog ()!=dialogresult.cancel)
{Try
{Printdocument.print ();
catch (Exception ex)
{MessageBox.Show (ex. message);
} }
}