I got a text file as show as below,

*THIS IS MACRO #4 LOAD BLADE HOME

*MD4

*AX

*AC20000 VL500 (FOR 1/2 STEP)

*HM0

*MA20 GO (FOR 1/2 STEP)

MD4

AX AC20000 VL500 HM0 MA20 GO

^Z

Then, i had open it and display it at a richtextbox. Now i want todisplay it at another richtextbox except the line begin with a remark(*). The another richtextboxwill only display

MD4

AX AC20000 VL500 HM0 MA20 GO

^Z

Can someone tell me howto do this?

Thank you.

Use the string Split method and split on Environment.NewLine. Then parse each line to see if you want to remove it or not, and build the string you want in your new text box.