﻿<?xml version="1.0" encoding="utf-8"?><Type Name="PreferTryParseRule" FullName="Gendarme.Rules.BadPractice.PreferTryParseRule"><TypeSignature Language="C#" Value="public class PreferTryParseRule : Gendarme.Framework.Rule, Gendarme.Framework.IMethodRule" /><TypeSignature Language="ILAsm" Value=".class public auto ansi beforefieldinit PreferTryParseRule extends Gendarme.Framework.Rule implements class Gendarme.Framework.IMethodRule, class Gendarme.Framework.IRule" /><AssemblyInfo><AssemblyName>Gendarme.Rules.BadPractice</AssemblyName><AssemblyVersion>4.2.0.0</AssemblyVersion></AssemblyInfo><Base><BaseTypeName>Gendarme.Framework.Rule</BaseTypeName></Base><Interfaces><Interface><InterfaceName>Gendarme.Framework.IMethodRule</InterfaceName></Interface></Interfaces><Attributes><Attribute><AttributeName>Gendarme.Framework.EngineDependency(typeof(Gendarme.Framework.Engines.OpCodeEngine))</AttributeName></Attribute><Attribute><AttributeName>Gendarme.Framework.Problem("Using a Parse method force you to catch multiple exceptions.")</AttributeName></Attribute><Attribute><AttributeName>Gendarme.Framework.Solution("Use the existing TryParse alternative method.")</AttributeName></Attribute></Attributes><Docs><summary>
             This rule will warn you if a method use a <c>Parse</c> method when an
             alternative <c>TryParse</c> method is available. A <c>Parser</c> method,
             when using correctly, requires you to deal with multiple exceptions (a 
             complete list likely not easily available) or catching all exceptions (bad).
             Also the throwing/catching of exceptions can kill performance. 
             The <c>TryParse</c> method allow simpler code without the performance penality.
             </summary><remarks>This rule is available since Gendarme 2.8</remarks><example>
             Bad example (no validation):
             <code>
             bool ParseLine (string line)
             {
            	string values = line.Split (',');
            	if (values.Length == 3) {
            		id = Int32.Parse (values [0]);
            		timestamp = DateTime.Parse (values [1]);
            		msg = values [2];
            		return true;
            	} else {
            		return false;
            	}
             }
             </code></example><example>
             Bad example (validation):
             <code>
             bool ParseLine (string line)
             {
            	string values = line.Split (',');
            	if (values.Length == 3) {
            		try {
            			id = Int32.Parse (values [0]);
            			timestamp = DateTime.Parse (values [1]);
            			msg = values [2];
            			return true;
            		}
            		catch {
            			// catching all exception is bad
            			return false;
            		}
            	} else {
            		return false;
            	}
             }
             </code></example><example>
             Good example:
             <code>
             bool ParseLine (string line)
             {
            	string values = line.Split (',');
            	if (values.Length == 3) {
            		if (!Int32.TryParse (values [0], out id))
            			return false;
            		if (!DateTime.TryParse (values [1], out timestamp))
            			return false;
            		msg = values [2];
            		return true;
            	} else {
            		return false;
            	}
             }
             </code></example></Docs><Members><Member MemberName=".ctor"><MemberSignature Language="C#" Value="public PreferTryParseRule ();" /><MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor() cil managed" /><MemberType>Constructor</MemberType><AssemblyInfo><AssemblyVersion>4.2.0.0</AssemblyVersion></AssemblyInfo><Parameters /><Docs><summary>To be added.</summary><remarks>To be added.</remarks></Docs></Member><Member MemberName="CheckMethod"><MemberSignature Language="C#" Value="public Gendarme.Framework.RuleResult CheckMethod (Mono.Cecil.MethodDefinition method);" /><MemberSignature Language="ILAsm" Value=".method public hidebysig newslot virtual instance valuetype Gendarme.Framework.RuleResult CheckMethod(class Mono.Cecil.MethodDefinition method) cil managed" /><MemberType>Method</MemberType><AssemblyInfo><AssemblyVersion>4.2.0.0</AssemblyVersion></AssemblyInfo><ReturnValue><ReturnType>Gendarme.Framework.RuleResult</ReturnType></ReturnValue><Parameters><Parameter Name="method" Type="Mono.Cecil.MethodDefinition" /></Parameters><Docs><param name="method">To be added.</param><summary>To be added.</summary><returns>To be added.</returns><remarks>To be added.</remarks></Docs></Member></Members></Type>