Layout Guidelines

Do write only one statement/declaration per line

// correct
DateTime startDate; 
DateTime endDate;
string name = "";

// avoid
DateTime startDate, endDate; string name = "";

Do use 4 spaces for indentatation. Do not use tabs.

Note: in Visual Studio or other IDEs, there is usually an option to automatically convert tabs into spaces.

if (num > max)
{
    num = max;
}

Do insert a space in between variables, keywords, operators, etc

// correct
while (currentIndex <= maxIndex)
{
}

// avoid
while(currentIndex<=maxIndex)
{
}

Do use parentheses to make clauses in an expression apparent

if (true)
{
    // expression here
}