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Tag: object

C#

How to lock the ciritical code part in C#

- 19.03.22 - ErcanOPAK comment on How to lock the ciritical code part in C#

According to Microsoft: The lock keyword ensures that one thread does not enter a critical section of code while another thread is in the critical section. If another thread tries to enter a locked code, it will wait, block, until the object is released. The lock keyword calls Enter at the start of the block and Exit at the end of the block. lock keyword actually […]

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C#

Constructors and Its Types in C#

- 25.03.20 | 29.03.20 - ErcanOPAK comment on Constructors and Its Types in C#

Constructor is a special method of the class that is automatically invoked when an instance of the class is created is called a constructor. The main use of constructors is to initialize the private fields of the class while creating an instance for the class. When you have not created a constructor in the class, the compiler […]

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ASP.Net MVC / ASP.Net WebForms / Devexpress / HTML

How to Solve The ‘Object reference not set to an instance of an object’ error in Batch Edit mode for ASPxGridView

- 01.10.19 | 22.11.19 - ErcanOPAK comment on How to Solve The ‘Object reference not set to an instance of an object’ error in Batch Edit mode for ASPxGridView

The issue occurs in Batch Edit Mode, because in this mode an empty invisible row is created and used for further grid editing. Since the Eval method returns a value type of an object, your attempt to call the ToString() method to the null value can lead to an exception. If you remove this conversion and use <%# […]

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SQL

Drag and Drop objects from Object Explorer to the Query Window in SQL Server

- 22.01.19 | 22.11.19 - ErcanOPAK comment on Drag and Drop objects from Object Explorer to the Query Window in SQL Server

Are you writing a query that selects data from a table with lots of columns?  Does the select list we need to have all or almost all of these columns? Remember, that it is possible to drag and drop objects from Object Explorer to the Query Window. By dragging and dropping the “Columns” node under […]

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