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lc. has asked 20 questions and find answers to 281 problems.

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lc. questions

How to check if a result contains rows? (FbDataReader.HasRows always returns true!)
EF Core 2.0 provider specific model configuration
Binding a ComboBox to an IList and using SelectedValue
Digital signature timestamp "not available" on XP/Vista, causing verification failure
Serial number (registration key) algorithm in .NET [closed]
Stop empty strings at the database level with EF code first
In a Linq predicate, will the compiler optimize a "scalar" call to Enumerable.Min() or will it be called for each item?
Problem with icon on creating new maximized MDI child form in .NET
What exception to throw from a property setter?
What is the difference between Nullable<T>.HasValue or Nullable<T> != null?

lc. answers

how to generate Invoice Number on each Bill
Selecting first records of a type in a given period
Using "from" as a script argument in Python
Draw an infinite line through 2 points?
Does Control.Controls property return recursively nested controls?
How do I find the nth row from a sql query?
Recursive CTE to find all ancestors OF ALL ITEMS
C# .NET 3.5 : How to invoke an event handler and wait for it to complete
C# Obeying the NewLine Character in a String Pulled from SQL server
SQL: Join on two tables where on column is null