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can not the "string.Empty" as the default parameter method?

can not the "string.Empty" as the default parameter method?

behzad pakniyat

11y5.4kVisual Basic .NET

Hi

To all users

When the value of "string.Empty" parameter method I use, I encountered the following error:

Error 1 Default parameter value for 'Name' must be a compile-time constant.

public void SetName(string Name = string.Empty)

{

this.mName = Name;

}

thanks.

4 Replies

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Saroj Kumar Sahu11y ago
Accepted answer
Hi,
You can not use String.Empty because Empty is not a Constant,its a ReadOnly Field which is defined as
public static readonly string Empty
So You can use "" instead as below

public void SetName(string Name = "")
{
this.mName = Name;
}

For more info,visit below link.
http://stackoverflow.com/questions/10825423/why-cant-i-use-string-empty-as-a-default-parameter-value
+2
Pankaj Kumar Choudhary11y ago
Hello @Behzad

Instead of your method try this

public void SetName(string Name)
{
this.mName= string.Empty ?? Name;
}
0
behzad pakniyat11y ago
Hi

Dear user

I would not use the default value for the parameter.

Check the following links:

http://www.dotnetperls.com/optional-parameters

https://msdn.microsoft.com/en-us/library/dd264739.aspx

thanks.
0
Ramesh Maruthi11y ago
Hi Behzad,

public void SetName(string Name)
{
Name = string.Empty;
this.mName = Name;

}

0