Set SelectionStart at specified position in RTB

Question

Hi Everyone !! How can I set the position of the I beam in richTextBox at for example (line 14 column 5)?? or select the word that starts at line 14 column 5??

akhil · Answer

richTextBox1.HideSelection=false richTextBox1.SelectionStart=GetSelectionStart(53) richTextBox1.SelectionLength=10 'to set cursor to specific line just pass 0 in column no and set seletionlength to 0 Public Function GetSelectionStart(nLine as IntegernColumn as Integer ) As integer Dim nIndx As Integer Dim nSelectionIndex as Integer=0 Dim sLines() As String =richTextBox1.Lines For nIndx=0 To sLines.Length -1 nSelectionIndex+=sLines(nIndx).Length Next return nSelectionIndex+nColumn End Function

Aleksandar Ilioski · Answer

Thank you one more time i also rewrite it in c# with some modification so it can throw exception if you try to select something in empty line... public int SetPosition( int linija int kolona) { int doKade = 0; string [] lini = richTextBox1.Lines; if (lini[linija-1].Length == 0) { throw new Exception ( Empty line ); } for ( int i = 0; i { doKade += lini[i].Length+1; } return doKade + kolona; } This was realy good piece of code thank you for shearing it with me. It made me to learn litle VB so I can rewrite it in c# :)

akhil · Answer

richTextBox1.HideSelection=false; richTextBox1.SelectionStart=GetSelectionStart(53); richTextBox1.SelectionLength=10; //to set cursor to specific line just pass 0 in column no and set seletionlength to 0 public int GetSelectionStart(int nLine int nColumn ) { int nIndx ; int nSelectionIndex =0; string [] sLines= richTextBox1.Lines; for(nIndx=0;nIndx sLines.Length ;nIndx++) { nSelectionIndex+=sLines[nIndx].Length ; } return nSelectionIndex+nColumn; }

Aleksandar Ilioski · Answer

thanks for this code I was asking how to do that in C# this one is in VB i gues but i'll try to rewrite in c#i hope I can do that but if you also know c# i will be gratefull if you post the code in c# too or if I rewrite it i'll let you now so you don't bother with me... Thank you very much