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Optional query string parameters in ASP.NET Web API
...sue has been fixed in the regular release of MVC4.
Now you can do:
public string GetFindBooks(string author="", string title="", string isbn="", string somethingelse="", DateTime? date= null)
{
// ...
}
and everything will work out of the box.
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Unable to cast object of type 'System.DBNull' to type 'System.String`
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A shorter form can be used:
return (accountNumber == DBNull.Value) ? string.Empty : accountNumber.ToString()
EDIT: Haven't paid attention to ExecuteScalar. It does really return null if the field is absent in the return result. So use instead:
return (accountNumber == null) ? string.Empty :...
How to make an HTTP POST web request
... a dependency injection solution.
POST
var values = new Dictionary<string, string>
{
{ "thing1", "hello" },
{ "thing2", "world" }
};
var content = new FormUrlEncodedContent(values);
var response = await client.PostAsync("http://www.example.com/recepticle.aspx", content);
var re...
Correct way to use StringBuilder in SQL
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The aim of using StringBuilder, i.e reducing memory. Is it achieved?
No, not at all. That code is not using StringBuilder correctly. (I think you've misquoted it, though; surely there aren't quotes around id2 and table?)
Note that the aim ...
Checking if a string array contains a value, and if so, getting its position
I have this string array:
12 Answers
12
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What is the easiest way in C# to trim a newline off of a string?
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The following works for me.
sb.ToString().TrimEnd( '\r', '\n' );
or
sb.ToString().TrimEnd( Environment.NewLine.ToCharArray());
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Remove substring from the string
I am just wondering if there is any method to remove string from another string?
Something like this:
10 Answers
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How to remove leading and trailing zeros in a string? Python
I have several alphanumeric strings like these
6 Answers
6
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c# datatable to csv
... opens fine in Excel, maybe your issue was the trailing comma
.net = 3.5
StringBuilder sb = new StringBuilder();
string[] columnNames = dt.Columns.Cast<DataColumn>().
Select(column => column.ColumnName).
ToArray();
sb.A...
Convert floating point number to a certain precision, and then copy to string
...point number, say 135.12345678910 . I want to concatenate that value to a string, but only want 135.123456789 . With print, I can easily do this by doing something like:
...