本文实例讲述了c#实现动态数据绘图graphic的方法。分享给大家供大家参考，具体如下：
using system;
using system.collections.generic;
using system测试数据ponentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
using system.drawing.drawing2d;
namespace drawing
{
public partial class form1 : form
{
public form1()
{
initializecomponent();
}
private int widthadded = 0;
private int heightadded = 0;
private int added_value = 15;
private int incremented = 3;
private double width_max = 0.0f;
private double height_max = 0f;
private string hstrlink;
private string vstrlink;
private const int hor_kedu=17;
private const int ver_kedu = 13;
private double helprdm = 0;
private void form1_load( object sender, eventargs e)
{
width_max=convert.todouble(panel.clientsize.width);
height_max = convert.todouble(panel.clientsize.height);
btnstatusinfoforb();
}
private void button1_click( object sender, eventargs e)
{
graphics mygraphics_framwork;
pen mypen = new pen(color.blue, 0.25f);
mygraphics_framwork = panel.creategraphics();
for ( int increment = 0; increment < panel.height; increment += incremented)
{
mygraphics_framwork.drawline(mypen, 0, heightadded, panel.clientsize.width, heightadded);
heightadded = heightadded + added_value;
}
for ( int increment = 0; increment < panel.height; increment += incremented)
{
mygraphics_framwork.drawline(mypen, widthadded, 0, widthadded, panel.clientsize.height);
widthadded = widthadded + added_value;
}
mygraphics_framwork.dispose();
for ( int hstart = 0; hstart < width_max; hstart += hor_kedu)
{
hstrlink = hstrlink + hstart.tostring() + "-" ;
}
label2.text = hstrlink;
for ( int start = ( int )height_max; start > 0; start -= ver_kedu)
{
vstrlink = vstrlink + start.tostring() + "-" + "\n" ;
}
label3.text = vstrlink + "0-" ;
btnstatusinfoacti();
button1.enabled = false ;
}
private void btnstatusinfoforb()
{
button2.enabled = false ;
button3.enabled = false ;
button4.enabled = false ;
trackbar1.enabled = false ;
rec_numbox.enabled = false ;
}
private void btnstatusinfoacti()
{
button2.enabled = true ;
button3.enabled = true ;
button4.enabled = true ;
trackbar1.enabled = true ;
rec_numbox.enabled = true ;
}
private void myfun()
{
graphics mygraphics = panel.creategraphics();
font myfont = new font( "times new roman" , 72, fontstyle.italic);
point startpoint = new point(0, 0);
point endpoint = new point(30, 30);
lineargradientbrush mybrush = new lineargradientbrush(startpoint, endpoint, color.black, color.yellow);
mybrush.wrapmode = wrapmode.tileflipxy;
mygraphics.drawstring( "string" , myfont, mybrush, 0, 0);
}
private void button2_click( object sender, eventargs e)
{
if (parabox1.text == null )
{
messagebox.show( "请输入矩形的高度" );
}
else
{
try
{
graphics mygraphics_rectangle = panel.creategraphics();
pen mypen_rec = new pen(color.red, 3);
rectangle rect = new rectangle();
rect.x = 20; rect.y = panel.clientsize.height - convert.toint32(parabox1.text);
rect.width = 20; rect.height = panel.clientsize.height;
mygraphics_rectangle = panel.creategraphics();
mygraphics_rectangle.drawrectangle(mypen_rec, rect);
solidbrush myrectbrush = new solidbrush(color.purple);
mygraphics_rectangle.fillrectangle(myrectbrush, rect);
mygraphics_rectangle.dispose();
}
catch (exception excp)
{
messagebox.show(excp.message);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_click( object sender, eventargs e)
{
graphics mygraphics_rectangle = panel.creategraphics();
if (rec_numbox == null )
{
messagebox.show( "请输入你要绘制的矩形数量" );
}
else
{
double count = convert.toint32(rec_numbox.text);
double tablespace = (1 * width_max) / (4 * count);
double tablewidth = (3 * width_max) / (4 * count);
double recoffset = tablewidth + tablespace; //
pen mypen_rec = new pen(color.red, 3);
for ( long rectnum = 0; rectnum < count; rectnum++)
{
random radom = new random();
system.threading.thread.sleep(20);
double randomhegiht =radom.next(0, convert.toint32(height_max));
rectangle rect = new rectangle();
rect.x =convert.toint32(rectnum*recoffset);
rect.y = convert.toint32(panel.clientsize.height - randomhegiht);
rect.width = convert.toint32(tablewidth);
rect.height = panel.clientsize.height;
mygraphics_rectangle = panel.creategraphics();
mygraphics_rectangle.drawrectangle(mypen_rec, rect);
solidbrush myrectbrush = new solidbrush(color.green);
mygraphics_rectangle.fillrectangle(myrectbrush, rect);
}
mygraphics_rectangle.dispose();
}
rec_numbox.text = added_value.tostring();
added_value = added_value+50;
}
private void button4_click( object sender, eventargs e)
{
stringformat sf= new stringformat();
sf.alignment = stringalignment.near;
graphics mygraphics = panel.creategraphics();
rectanglef ref = new rectanglef(12, 30, 8, 38);
font myfont = new font( "times new roman" , 62, fontstyle.italic);
point startpoint = new point(0, 0);
point endpoint = new point(30, 30);
lineargradientbrush mybrush = new lineargradientbrush(startpoint, endpoint, color.green, color.blue);
solidbrush myrectbrush = new solidbrush(color.purple);
mybrush.wrapmode = wrapmode.tileflipxy;
mygraphics.drawstring( "b2spirit" , myfont, mybrush, 0, 0);
random r= new random();
int temp=r.next(10,300);
mygraphics.drawstring(temp.tostring(), myfont, myrectbrush, ref , sf);
}
private void trackbar1_scroll( object sender, eventargs e)
{
trackbar mytb= new trackbar();
mytb=(trackbar)sender;
rec_numbox.text = mytb.value.tostring();
}
}
}
截图
希望本文所述对大家c#程序设计有所帮助。
原文链接：http://blog.csdn.net/microzone/article/details/16903943
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