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Showing content from https://learn.microsoft.com/en-us/dotnet/api/system.io.path.tryjoin below:

Path.TryJoin Method (System.IO) | Microsoft Learn

Path.TryJoin Method Definition

Attempts to concatenate individual path components to a preallocated character span, and returns a value that indicates whether the operation succeeded.

Overloads

The destination character span must be large enough to hold the concatenated path. You can then retrieve the concatenated path by calling the Span<T>.Slice method, as the following example illustrates.

using System;
using System.IO;

class Program
{
    static void Main()
    {
        int nChars = 0;
        var buffer = new Span<Char>(new String(' ', 100).ToCharArray());
        var flag = Path.TryJoin("C:/".AsSpan(), "Users/user1".AsSpan(), buffer, out nChars);
        if (flag) 
            Console.WriteLine($"Wrote {nChars} characters: '{buffer.Slice(0, nChars).ToString()}'");
        else
            Console.WriteLine("Concatenation operation failed.");
    }
}

TryJoin(ReadOnlySpan<Char>, ReadOnlySpan<Char>, ReadOnlySpan<Char>, Span<Char>, Int32)

Source:: Path.cs

Source:: Path.cs

Source:: Path.cs

Source:: Path.cs

Attempts to concatenate three path components to a single preallocated character span, and returns a value that indicates whether the operation succeeded.

public:
 static bool TryJoin(ReadOnlySpan<char> path1, ReadOnlySpan<char> path2, ReadOnlySpan<char> path3, Span<char> destination, [Runtime::InteropServices::Out] int % charsWritten);

public static bool TryJoin(ReadOnlySpan<char> path1, ReadOnlySpan<char> path2, ReadOnlySpan<char> path3, Span<char> destination, out int charsWritten);

static member TryJoin : ReadOnlySpan<char> * ReadOnlySpan<char> * ReadOnlySpan<char> * Span<char> * int -> bool

Public Shared Function TryJoin (path1 As ReadOnlySpan(Of Char), path2 As ReadOnlySpan(Of Char), path3 As ReadOnlySpan(Of Char), destination As Span(Of Char), ByRef charsWritten As Integer) As Boolean

Parameters

path2: ReadOnlySpan<Char>

A character span that contains the second path to join.

destination: Span<Char>

A character span to hold the concatenated path.

charsWritten: Int32

When the method returns, a value that indicates the number of characters written to the destination.

Returns

true if the concatenation operation is successful; otherwise, false.

Remarks

destination must be large enough to hold the concatenated path. You can then retrieve the concatenated path by calling the Span<T>.Slice method, as the example illustrates.

See also

File path formats on Windows systems

TryJoin(ReadOnlySpan<Char>, ReadOnlySpan<Char>, Span<Char>, Int32)

Source:: Path.cs

Source:: Path.cs

Source:: Path.cs

Source:: Path.cs

Attempts to concatenate two path components to a single preallocated character span, and returns a value that indicates whether the operation succeeded.

public:
 static bool TryJoin(ReadOnlySpan<char> path1, ReadOnlySpan<char> path2, Span<char> destination, [Runtime::InteropServices::Out] int % charsWritten);

public static bool TryJoin(ReadOnlySpan<char> path1, ReadOnlySpan<char> path2, Span<char> destination, out int charsWritten);

static member TryJoin : ReadOnlySpan<char> * ReadOnlySpan<char> * Span<char> * int -> bool

Public Shared Function TryJoin (path1 As ReadOnlySpan(Of Char), path2 As ReadOnlySpan(Of Char), destination As Span(Of Char), ByRef charsWritten As Integer) As Boolean