How can we gain characters before the text cursor in rich text box?

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Hi everyone,
I am new in programming C#.
I am having a problem with richtextbox,I don't know how to get the text before the text cursor. I have no idea about this. So plz someone help me.
Thx for reading.
sincerely.

Posted 12-May-11 8:17am

Tokisan

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OriginalGriff · Accepted Answer · 2011-05-12T08:31:00

You can get the cursor position indirectly, via the SelectionStart and SelectionLength properties.

The SelectionStart is always the top left of any selected text, and the SelectionLength is the number of character selected.

If there is no selection, you get the current cursor position, and zero. The value is number of characters from the start of the text, so it is simple to work out what characters are before the cursor!

Tokisan · Accepted Answer · 2011-05-12T18:11:00

If there is no selection, you get the current cursor position, and zero. The value is number of characters from the start of the text, so it is simple to work out what characters are before the cursor!<br />

If there is no selection, I will get the current cursor position, and characters before cursor is zero,won't I??
I don't understand.
Sr for my bad English.
Thx for relying me.
Sincerely.

Tokisan · Accepted Answer · 2011-05-12T21:30:00

Solution 3

Thx alot.
I understand ur idea now.
But richtext has method to get the start of aline in Richtext,dosen't it??
sr for my bad skill in programming.
Thx ^^.

Posted 12-May-11 21:30pm

Tokisan

Updated 12-May-11 21:33pm

v2

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Santosh K. Tripathi 26-Feb-15 23:32pm

don't post as solution. you should post a comment.

How can we gain characters before the text cursor in rich text box?

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