C#

using System.Collections.Specialized;
 
public static StringCollection FindLinesOverSearchString(string[] LinesToSearch, string TextToSearch)
{
	StringCollection resultLines = new StringCollection();
	if(LinesToSearch!=null)
	{
		foreach(string actLine in LinesToSearch)
		{
			if(actLine.IndexOf(TextToSearch)!=-1)
			{
				resultLines.Add(actLine);
			}
		}
	}
	return resultLines;
}

StringCollection textboxresult = FindLinesOverSearchString(yourTextBox.Lines, "searchstring");

solutionsville wrote:

I am not sure I understand how I take the value of the textbox as a string and pass it to the above routine

FindLinesOverSearchString(yourTextBox.Lines, "searchstring");

//Again the method call for the search
StringCollection resultLines = FindLinesOverSearchString(yourTextBox.Lines, "searchstring");
 
//create a new instance of string[], with the needed lenght
string[] resultAsStringArray = new string[resultLines.Count];
//copy data of StringCollection to the new string[]
resultLines.CopyTo(resultAsStringArray,0);
//path it to the result TextBox "Lines" property
yourTextBoxResult.Lines = resultAsStringArray;

solutionsville wrote:

Lets say I want to search for and display every line that has the word "one" in it and then display it in a RichTextBox

<br />
int hasOne;<br />
<br />
string strWorkString = string.Empty;<br />
strWorkString = "one plus 3";<br />
<br />
hasOne = strWorkString.IndexOf("one");<br />

solutionsville wrote:

MessageBox.Show("String: " + txtSearchTerm.Text.ToString() + " not found", "No Matches", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

<br />
MessageBox.Show(string.Format("String: {0} not found", txtSearchTerm.Text.ToString()), "No Matches", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);<br />

KETAN.RK wrote:

Well done Baby...........
Keep it up.....