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How to get the first five character of a String
...stFivChar = new string(yourStringVariable.Take(5).ToArray());
The plus with the approach is not checking for length before hand.
The other way is to use String.Substring with error checking
like:
string firstFivCharWithSubString =
!String.IsNullOrWhiteSpace(yourStringVariable) &&am...
Select count(*) from multiple tables
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edited Mar 5 '09 at 9:52
answered Mar 3 '09 at 12:39
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Using Transactions or SaveChanges(false) and AcceptAllChanges()?
I have been investigating transactions and it appears that they take care of themselves in EF as long as I pass false to SaveChanges() and then call AcceptAllChanges() if there are no errors:
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How can I run PowerShell with the .NET 4 runtime?
...ng a PowerShell script that manages some .NET assemblies. The script was written for assemblies built against .NET 2 (the same version of the framework that PowerShell runs with), but now needs to work with .NET 4 assemblies as well as .NET 2 assemblies.
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How to implement a binary tree?
...entation of binary search tree.
#!/usr/bin/python
class Node:
def __init__(self, val):
self.l = None
self.r = None
self.v = val
class Tree:
def __init__(self):
self.root = None
def getRoot(self):
return self.root
def add(self, val):
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How do I get the SharedPreferences from a PreferenceActivity in Android?
I am using a PreferenceActivity to show some settings for my application. I am inflating the settings via a xml file so that my onCreate (and complete class methods) looks like this:
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How do I pass a class as a parameter in Java?
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edited May 3 '16 at 4:37
Mark Cramer
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How to secure MongoDB with username and password
... ask for the user name & password. I tried the tutorial from the MongoDB site and did following:
15 Answers
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How to iterate through SparseArray?
Is there a way to iterate over Java SparseArray (for Android) ? I used sparsearray to easily get values by index. I could not find one.
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Reset AutoIncrement in SQL Server after Delete
... mytable to start at 1:
DBCC CHECKIDENT (mytable, RESEED, 0)
Read about it in the Books on Line (BOL, SQL help). Also be careful that you don't have records higher than the seed you are setting.
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