Change Color of a semicolon in RichTextBox

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Hi All,
i am having a RichTextbox in my windows form if the user will enter Semicolon(;) then i need to make it Bold and change color to Red
foe eg:

SQL

insert into TableName values (1,'UserName1');
insert into TableName values (2,'UserName2');
insert into TableName values (3,'UserName3');
insert into TableName values (4,'UserName4');

i have tried this on textchange event

VB

Dim str As String = ";"
If txtScript.Find(str) > 0 Then
    Dim pos As Integer = txtScript.Find(str)
    txtScript.SelectionStart = pos
    txtScript.SelectionLength = str.Length
    txtScript.SelectionColor = Color.Red
End If

but after the first semicolon it is changing the color of whole text in textbox i need to change only of semicolon

Best Regards..

Posted 3-Feb-14 23:36pm

Basmeh Awad

Updated 4-Feb-14 0:02am

v4

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Kornfeld Eliyahu Peter 4-Feb-14 5:45am

Have you done anything so far? Show some effort (code or searching?)! As is it ain't a question...

Basmeh Awad 4-Feb-14 6:00am

yes i tried..updated the question

1 solution

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Abhinav S · Answer 1 · 2014-02-03T23:46:00

Solution 1

Quite easy to do -

C#

string str=@"'";
if (richTextBox1.Find(str)>0)
{
    int pos=richTextBox1.Find(str);
    richTextBox1.SelectionStart=pos;
    richTextBox1.SelectionLength=str.Length;
    richTextBox1.SelectionColor=Color.Green; //Your color here
}

The code above can be modified to change the color for any text (use the str constant for that).

Posted 3-Feb-14 23:46pm

Abhinav S

Comments

Basmeh Awad 4-Feb-14 5:57am

thanks.. i have tried this code before but its not actually what i need because
if i am entering this text in textbox
insert into TableName values (1,'UserName1');
insert into TableName values (2,'UserName2');
insert into TableName values (3,'UserName3');
insert into TableName values (4,'UserName4');

after the first semicolon it is changing the color of every text in textbox i need to change only of semicolon

Abhinav S 4-Feb-14 6:03am

Ensure pos value is correct.