Searching for Text

Searching for Text

• Kumar80

  hi,

  thats very good that you knew the answer,

  should i write all that i just gave you a reference for the solution , don't forget i said "you can polish it but this works", i'm not trying to write the project for you , i just trying to help

  ok regarding to your other question this is another solution you can change  this line

  int tmp = textBox1.Text.ToLower().IndexOf(textBox2.Text.ToLower(), startindex + 1);

  i changed the both of textboxs.text tolower so if the user enter a capital letter or the text contain a capital letter both of them will be ignored during searching

  best regards

  Shakalama

  
  
  

• Aaron Humphrey

  ok Marked

  Thank you

  have a nice time

  good luck :)

  
  
  

• vpdsouza

  Try this:

  int tmp = textBox1.Text.IndexOf(textBox2.Text, startindex + 1, StringComparison.CurrentCultureIgnoreCase);

   

  The default is :

  StringComparison.CurrentCulture

  
  
  

• Boris B

  hi,

  Thanks shakalama for your help,

  this code is good but there is somethings I think we have to do...
  fristly this code will search for just 1 Time then you cannot change the string to another and search for it so..
  we have to put ' startindex = 0;' under textBox2_TextChanged
  this will reset the value of startindex then we can search again for another.

  you know Windows`s users dont care of the statue of letters(Capital or Small) but with this code you must enter the string exactly like that in the textBox1.. so if you have any idea to solve this problem and control it like notepad plz tell me.

  Best Regards.

  
  
  

• wjousts

  hi,

  you can do something like that

  namespace WindowsApplication1 { //this form contain // multilines textbox to display the text //textbox for user to write the search critarea //button to find the next match by every click public partial class Form1 : Form { public Form1() { InitializeComponent(); this.textBox1.AcceptsReturn = true; this.textBox1.HideSelection = false; this.textBox1.Multiline = true; textBox1.Text = " Hello, Thanks for your reply now I understood what you had say and I did it with 'Contains'but I cannot apply that with 'IndexOf'so plz explain it form me-------------another somthing,when I get the string that I`m looking for, How can I make a selection on it and how can I start searching starting from the string that I found before (Long questions I think )Thanks."; } int startindex = 0; private void button1_Click(object sender, EventArgs e) { int tmp = textBox1.Text.IndexOf(textBox2.Text, startindex + 1); if (tmp > -1 && textBox2.Text.Length > 0) { startindex = tmp; textBox1.Select(startindex, textBox2.Text.Length); } } } }

  you can polish it more than that but this works

  best regards

  
  
  

• Herr Vorragend

  Hello,

  Thanks for your reply

  now I understood what you had say and I did it with 'Contains'

  but I cannot apply that with 'IndexOf'

  so plz explain it form me

  -------------

  another somthing,

  when I get the string that I`m looking for, How can I make a selection on it and how can I start searching starting from the string that I found before

  (Long questions I think )

  Thanks.

  
  
  

• kbarlar

  hi,

  notanotherusername,

  may be converting to Lower will take longer time specially if the file was too long, so that I used

  CurrentCultureIgnoreCase

  as shakalama wrote and its working good now

  and I have a problems with reading some files, I will write it in other topic shortly

  Best Regards

  
  
  

• Shifarad

  hi,

  it`s really good

  you solved this problem

  about this line I made the same as this line

  int tmp = textBox1.Text.ToLower().IndexOf(textBox2.Text.ToLower(), startindex + 1);

  but I wrote it like this :

  int tmp = textBox1.Text.IndexOf(textBox2.Text.ToLower(), startindex + 1);

  so that cased a problem with me but now it works excellent

  There is another problem I will try to fix it and if I failed I will write it here

  Thank you

  
  
  

• Tinu

  Thankyou all:) This works perfect for me.! Thank you!!
  
  Best Regards!!
  
  Rickard
  
  

• VisualDBA

  Hehe hi, I have searched for a sulotion for sooo long time something simpel like this. And this acctuly works but there is one litte tiny problem.. When i search for my word it only highlights in the textbox but dosent scroll down to the word so you have to scroll down by hand to the highlighted word. I have probably missed something simpel, anyone knows what
  
  Best Regards
  
  //Rickard [swe]
  
  

• JohnCronin

  hi

  AeQuitaZ

  I found the same problem but I solved it

  simply put this code at the end of your search code

  textBox1.ScrollToCaret();

  this will scroll down to your highlighted text

  Best Regards

  
  
  

• 勇敢的心

  hi,

  because your problem was solved and you decided to start a new thread , would you mark the answer for your question

  thx

  
  
  

• denis kahl

  I'm not sure using ToLower() is a good idea, surely that will cause the entire contents of the textbox to be copied in memory to a lowcase version.

  Testing it out on my box it is definately slower, twice to three times if you don't scroll as well. Not a noticable difference, but would scale worse and eat RAM on large files.

  
  
  

• Brandon Hawkins

  Use the 'Contains' or the 'IndexOf' methods of the Text property of the textbox or rich textbox to search for strings.

  'Contains' will return a boolean value indicating whether a string contains a particular substring.

  'IndexOf' is more versatile & returns the index of the substring.

  
  
• Searching for Text