Brothers and sisters for help, ask a question of c # GDI + drawing, I now have a TXT, containing the data of one day, a second line of data, data content is time and data values, a total of 86400 sets of data, I read out the data now, want to draw the line chart, the data are drawn, found that painting particularly slow, could you tell me what to do,
In addition, it is continuous data, if the middle data loss, such as missing for a few minutes, and how can this drawing?