C# two using statements
WebMar 8, 2012 · The purpose of a statement is to cause a side effect. The call site of this thing would look an awful lot like an expression (though, admittedly, since the method is void-returning, the expression could only be used in a “statement expression” context.) You should absolutely write this using an if block. It's clearer. WebApr 11, 2024 · The do statement differs from a while loop, which executes zero or more times. The following example shows the usage of the do statement: C# int n = 0; do { Console.Write (n); n++; } while (n < 5); // Output: // 01234 The while statement
C# two using statements
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WebDec 3, 2012 · It's bad form though). There are much better ways to detect whether a table exists, but to do it in this way you could perhaps use a try/catch. It might also be easier to use ExecuteScalar() instead of ExecuteReader() since you don't use any of the actual results, anyway. – Web5 Answers Sorted by: 17 You can remove the indention and curly brackets this way: using (var fileStream = new FileStream ("ABC.pdf", FileMode.Create)) using (var document = new Document (PageSize.A4, marginLeft, marginRight, marginTop, marginBottom)) using (var pdfWriter = PdfWriter.GetInstance (document, fileStream)) { // code } Share
WebJun 28, 2013 · I personally like the way that C# handles this by allowing this syntax: using (Foo foo = new Foo ()) using (Bar bar = new Bar ()) { // .... } However I find the VB.NET equivalent of this form (your second example) to be less readable than the nested Using statements from your first example. But this is just my opinion. WebMay 17, 2010 · If you have two variables of the same type, you can use a single using statement: using (Stream input = File.OpenRead ("input.dat"), output = File.OpenWrite ("output.dat")) { } Now assuming you really want to go ahead with this: Your code will dispose of its contained resources in a hard-to-predict order.
WebMar 13, 2024 · The using keyword has two major uses: The using statement defines a scope at the end of which an object is disposed. The using directive creates an alias for … WebApr 7, 2024 · Example 1: C# program to demonstrate the example of multiple if-else. Here, we are asking for an integer input – and checking whether input integer is positive value, …
WebFeb 20, 2024 · The C# using statement defines a boundary for the object outside of which, the object is automatically destroyed. The using statement in C# is exited when the end of the "using" statement block or the execution exits the "using" statement block indirectly, for example - an exception is thrown.
WebFeb 21, 2012 · The accepted way is just to chain the statements: using (var sr = new StringReader(content)) using (var xtr = new XmlTextReader(sr)) { obj = … orange and black backgroundsWebMar 11, 2014 · Nested using statements (Using in Visual Basic) can cause violations of the CA2202 warning. If the IDisposable resource of the nested inner using statement contains the resource of the outer using statement, the Dispose method of the nested resource releases the contained resource. When this situation occurs, the Dispose … ip utility windows 10WebExample 3: C# if...else if Statement. The value of number is initialized to 12. The first test expression number < 5 is false, so the control will move to the else if block. The test expression number > 5 is true hence the block of code inside else if will be executed. ip valuation for video game ipWebFeb 26, 2024 · Although you should strive to have only one return statement for readability purposes the are several patterns that involve multiple return statements. One example is Guard Clause. Example of guard clause: public Foo merge (Foo a, Foo b) { if (a == null) return b; if (b == null) return a; // complicated merge code goes here. } ip variation file typeWebJul 18, 2014 · The scope of the first using statement is the immediately following (embedded) using statement. using statements without explicit curly braces apply only to the following statement. Thus, when chained, they work the same way. The second using here acts as a single statement. orange and black bandanaWebThe LINQ Contains Method in C# is used to check whether a sequence or collection (i.e. data source) contains a specified element or not. If the data source contains the specified element, then it returns true else returns false. There are there Contains Methods available in C# and they are implemented in two different namespaces. ip ventures philippinesWebWhat does assert () method do. The use of assert statements can be an effective way to catch program logic errors at runtime, and yet they are easily filtered out of production code. An assertion usually takes two arguments: a boolean expression that describes the assumption that’s supposed to be true and a message to display if it is not. orange and black basketball court