[c#] Why is the default value of the string type null instead of an empty string?

Since you mentioned ToUpper(), and this usage is how I found this thread, I will share this shortcut (string ?? "").ToUpper():

    private string _city;
    public string City
    {
        get
        {
            return (this._city ?? "").ToUpper();
        }
        set
        {
            this._city = value;
        }
    }

Seems better than:

        if(null != this._city)
        { this._city = this._city.ToUpper(); }

Examples related to c#

How can I convert this one line of ActionScript to C#? Microsoft Advertising SDK doesn't deliverer ads How to use a global array in C#? How to correctly write async method? C# - insert values from file into two arrays Uploading into folder in FTP? Are these methods thread safe? dotnet ef not found in .NET Core 3 HTTP Error 500.30 - ANCM In-Process Start Failure Best way to "push" into C# array

Examples related to string

How to split a string in two and store it in a field String method cannot be found in a main class method Kotlin - How to correctly concatenate a String Replacing a character from a certain index Remove quotes from String in Python Detect whether a Python string is a number or a letter How does String substring work in Swift How does String.Index work in Swift swift 3.0 Data to String? How to parse JSON string in Typescript

Examples related to default-value

How to set a default value in react-select How to set default values in Go structs What is the default value for Guid? CURRENT_DATE/CURDATE() not working as default DATE value Entity Framework 6 Code first Default value Default values and initialization in Java Python argparse: default value or specified value Javascript Get Element by Id and set the value Why is the default value of the string type null instead of an empty string? SQL Column definition : default value and not null redundant?