How to use C# string Contains
The CSharp Contains method returns true if and only if this string contains the specified sequence of char values.
bool string.containe(string str)
Parameters:
String str - input String for search
Returns:
Boolean - Yes/No
If the str Contains in the String then it returns true
If the str does not Contains in the String it returns False
For ex: "This is a Test".Contains("is") return True
"This is a Test".Contains("yes") return False
Exceptions:
System.ArgumentNullException : If the argument is null
using System;
using System.Windows.Forms;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string str = null;
str = "CSharp TOP 10 BOOKS";
if (str.Contains("TOP") == true)
{
MessageBox.Show("The string Contains() 'TOP' ");
}
else
{
MessageBox.Show("The String does not Contains() 'TOP'");
}
}
}
} |
When you run the C# program you will get the MessageBox with message "The string Contains() 'TOP' "
|