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C# | Uri.EscapeDataString(String) Method

Last Updated : 11 Jul, 2025
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Uri.EscapeDataString(String) Method is used to convert a string to its escaped representation.
Syntax: public static string EscapeDataString (string stringToEscape); Here, it takes the string to escape. Return Value: This method returns a string which contains the escaped representation of stringToEscape. Exception: This method throws ArgumentNullException if stringToEscape is null. and UriFormatException if The length of stringToEscape exceeds 32766 characters.
Below programs illustrate the use of Uri.EscapeDataString(String) Method: Example 1: csharp 
// C# program to demonstrate the
// Uri.EscapeDataString(String) Method
using System;
using System.Globalization;

class GFG {

    // Main Method
    public static void Main()
    {
        try {

            // Declaring and initializing address1
            string address1 = "https://www.microsoft.com/en-us/#search";

            // Converting a string to its 
            // escaped representation
            // using EscapeDataString() method
            string value = Uri.EscapeDataString(address1);

            // Displaying the result
            Console.WriteLine("Escaped string is : {0}", value);
        }

        catch (ArgumentNullException e) 
        {
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}
Output: 
Escaped string is : https%3A%2F%2F2.zoppoz.workers.dev%3A443%2Fhttp%2Fwww.contoso.com%2Findex.htm%23search
Example 2: For ArgumentNullException csharp 
// C# program to demonstrate the
// Uri.EscapeDataString(String) Method
using System;
using System.Globalization;

class GFG {

    // Main Method
    public static void Main()
    {

        try {

            // Declaring and initializing address1
            string address1 = null;

            // Converting a string to its 
            // escaped representation
            // using EscapeDataString() method
            string value = Uri.EscapeDataString(address1);

            // Displaying the result
            Console.WriteLine("Escaped string is : {0}", value);
        }

        catch (ArgumentNullException e) 
        {
            Console.WriteLine("stringToEscape can not be null");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }

        catch (UriFormatException e) 
        {
            Console.WriteLine("Length of stringToEscape should"+
                          " not exceed from 32766 characters.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}
Output: 
stringToEscape can not be null
Exception Thrown: System.ArgumentNullException
Example 3: For UriFormatException csharp 
// C# program to demonstrate the
// Uri.EscapeDataString(String) Method
using System;
using System.Text;
using System.Globalization;

class GFG {

    // Main Method
    public static void Main()
    {
        try {

            // Declaring and initializing address1
            StringBuilder address1 = new StringBuilder("https://www.microsoft.com/en-us/#search");

            // appending StringBuilder
            for (int i = 1; i <= 3000; i++)
                address1.Append("abcedfghijklmnopdjdjdjdjdjjddjjdjdj");

            // Converting a string to its 
            // escaped representation
            // using EscapeDataString() method
            string value = Uri.EscapeDataString(address1.ToString());

            // Displaying the result
            Console.WriteLine("Escaped string is : {0}", value);
        }

        catch (ArgumentNullException e)
       {
            Console.WriteLine("stringToEscape can not be null");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }

        catch (UriFormatException e)
        {
            Console.WriteLine("Length of stringToEscape should"+
                          " not exceed from 32766 characters.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}
Output: 
Length of stringToEscape should not exceed from 32766 characters.
Exception Thrown: System.UriFormatException
Reference:

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rohitprasad3
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