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How do you create empty strings in C#?

Posted By :Narayanan     Posted Date :September 03, 2011    Points :40   Category :C# 
Using string.empty
EX:
String EString = String.Empty;

You can also find related Interview Question to How do you create empty strings in C#?  below: 

What is Private Constructor? and it's use? Can you create instance of a class which has Private Constructor?

  
When a class declares only private instance constructors, it is not possible for classes outside the program to derive from the class or to directly create instances of it. (Except Nested classes)
Make a constructor private if:

1) You want it to be available only to the class itself. For example, you might have a special constructor used only in the implementation of your class' Clone method.

2) You do not want instances of your component to be created. For example, you may have a class containing nothing but Shared utility functions, and no instance data. Creating instances of the class would waste memory. (More...)

What are the requirements to create a CLR based user-defined type?

  
CLR must be enabled for the instance and A class created with a CLR-compatible language. (More...)

To create a string literal exclude escape sequence

  
@string. With adding @ at the beginning you can escape literal (More...)

What command is used to create a table by copying the structure of another table?

  
CREATE TABLE .. AS SELECT command

Explanation :

To copy only the structure, the WHERE clause of the SELECT command should contain a FALSE statement as in the following.
CREATE TABLE NEWTABLE AS SELECT * FROM EXISTINGTABLE WHERE 1=2;
If the WHERE condition is true, then all the rows or rows satisfying the condition will be copied to the new table. (More...)

Difference between String.Empty and ""

  
The main difference is lies on memory management.

String.Empty will not create any object of string where as "" (Double Quote or Empty Quote) will create a new object in the memory for the checking the objects. (More...)

How u can create XML file?

  
To write Dataset Contents out to disk as an XML file use:
MyDataset.WriteXML(server.MapPath("MyXMLFile.xml")) (More...)

Can I create your own custom templates in Sharepont?

  
Yes you can. You can have templates for business plans, doctor's office, lawyer's office, Educational, health etc and if you want to share with anyone else in SharePint community you can upload your own SharePoint templates to Microsoft website. (More...)

Is it possible to create Cluster Index on Unique Key Column?

  
Unique key column by default creates a non-cluster index on the column. Primary key creates cluster index on the column. The only difference is Unique key column allows only one null value. So is it possible to have cluster index on Unique key column?

The answer is YES. Though Unique key allows null value but it still maintains the uniqueness of the column. (More...)

Is it possible to create cookies with keys? Explain using some example.

  
Yes, it is possible to create cookies with keys.
Cookies is a dictionary at the time of initialization, if key is specified with it. (You can determine whether cookie is dictionary or not using HasKeys property. )
For an example:

Response.Cookies("Testcookie")("key1") = "key1"
Response.Cookies("Testcookie")("key2") = "key2"

After this if you make assignment like,
Response.Cookies("Testcookie") = "noKey"
Then," key1" and "key2" of cookie("Testcookie") will be deleted. (More...)

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