C# Convert a Long to String

Question

Here my problem is:

I have this code:

static long CountLinesInFile(string f)
{
    long count = 0;
    using (StreamReader r = new StreamReader(f))
    {
        string line;
        while ((line = r.ReadLine()) != null)
        {
            count++;
        }
    }
    return count;
}

Which counts the lines of a text file. The problem I have is that when I'm trying this:

textBox1.Text = CountLinesInFile("test.txt");

I'm getting an error:

Error   1   Cannot implicitly convert type 'long' to 'string'

It seems legit, but how am I supposed to convert it to string? In Java its a simple toString()

Can someone give me a solution?

Accepted Answer

Use the ToString() method like this:

textBox1.Text = CountLinesInFile("test.txt").ToString();

Answer 2

In Java its a simply .ToString

And in C#, its simply .ToString().

Happy learning.

Answer 3

just write

textBox1.Text =(CountLinesInFile("test.txt")).ToString();

MSDN: Object.ToString Method - Returns a string that represents the current object.

Answer 4

try this textBox1.Text = CountLinesInFile("test.txt").ToString();

Answer 5

champs.

I did this: "Cast the dynamic value to long and convert to string"

((long)x.PersonId).ToString();

Answer 6

There are different ways to convert long to string.

Using .ToString()

long testField = 100; string stringEquivalent = testField.ToString();
Using string.Format

long testField = 123; string stringEquivalent = string.Format("{0}", testField);
Using Convert.ToString

long testField = 123; string stringEquivalent = Convert.ToString(testField);
Using String interpolation

long testField = 123; string stringEquivalent = $"{testField}";
Using + operator

long testField = 123; string stringEquivalent = "" + testField;
Using StringBuilder

long testField = 123; string stringEquivalent = new StringBuilder().Append(testField).ToString();
Using TypeConverter

TypeConverter converter = TypeDescriptor.GetConverter(typeof(long)); long testField = 123; string stringEquivalent = (string)converter.ConvertTo(testField, typeof(string));

C# Convert a Long to String

6 Answers

Must Read

Your Answer

Sarah Jenkins

C# Convert a Long to String

6 Answers

Must Read

Your Answer

Sign up or log in

Post as a guest

Sarah Jenkins