That's possible : have a look to System.CodeDom and System.CodeDom.Compiler.
I have found an example I wrote few months ago :
assume 'usingList' is an arraylist with all using statement (without using
keyword, "System.Xml" for example)
assume 'importList' is an arraylist with all dll name that are necessary for
compilation ("system.dll" for example)
assume 'source' is the source code you want to compile
assume 'classname' is the name of the class you want to compile
assume 'methodname' is the name of the method
Have a look to the following code :
---------------------------------------
//Create method
CodeMemberMethod pMethod = new CodeMemberMethod();
pMethod.Name = methodname;
pMethod.Attributes = MemberAttributes.Public;
pMethod.Parameters.Add(new
CodeParameterDeclarationExpression(typeof(string[]),"boxes"));
pMethod.ReturnType=new CodeTypeReference(typeof(bool));
pMethod.Statements.Add(new CodeSnippetExpression(@"
bool result=true;
try {
"+source+@"
} catch {
result=false;
}
return result;
"));
//Crée la classe
CodeTypeDeclaration pClass = new
System.CodeDom.CodeTypeDeclaration(classname);
pClass.Attributes = MemberAttributes.Public;
pClass.Members.Add(pMethod);
//Crée le namespace
CodeNamespace pNamespace = new CodeNamespace("myNameSpace");
pNamespace.Types.Add(pClass);
foreach(string sUsing in usingList) pNamespace.Imports.Add(new
CodeNamespaceImport(sUsing));
//Create compile unit
CodeCompileUnit pUnit = new CodeCompileUnit();
pUnit.Namespaces.Add(pNamespace);
//Make compilation parameters
CompilerParameters pParams = new
CompilerParameters((string[])importList.ToArray(typeof(string)));
pParams.GenerateInMemory = true;
//Compile
CompilerResults pResults=(new
CSharpCodeProvider()).CreateCompiler().CompileAsse mblyFromDom(pParams,pUnit)
;
if (pResults.Errors != null && pResults.Errors.Count>0) {
foreach(CompilerError pError in pResults.Errors)
MessageBox.Show(pError.ToString());
result =
pResults.CompiledAssembly.CreateInstance("myNameSp ace."+classname);
}
---------------------------------------
for an example,
if 'usingList' equals {"System.Text.RegularExpressions"}
if 'importList' equals {"System.dll"}
if 'classname' equals "myClass"
if 'methodName' equals "myMethod"
if 'source' equals "
string pays=@"ES
FR
EN
"
Regex regex=new Regex(@"^[A-Za-z]{2}$");
result=regex.IsMatch(boxes[0]);
if (result) {
regex=new Regex(@"^"+boxes[0]+@".$",RegexOptions.Multiline);
result=regex.Matches(pays).Count!=0;
}
then, the code that will be compiled will be the following :
using System.Text.RegularExpressions;
namespace myNameSpace {
public class myClass {
public bool myMethod(string[] boxes) {
bool result=true;
try {
string pays=@"ES
FR
EN
"
Regex regex=new Regex(@"^[A-Za-z]{2}$");
result=regex.IsMatch(boxes[0]);
if (result) {
regex=new Regex(@"^"+boxes[0]+@".$",RegexOptions.Multiline);
result=regex.Matches(pays).Count!=0;
}
} catch {
result=false;
}
return result;
}
}
}
---------------------------------------------------
Hope it helps,
Ludovic Soeur.
"John Grandy" <johnagrandy-at-yahoo-dot-com> a écrit dans le message de
news:O1**************@TK2MSFTNGP14.phx.gbl...
The former.
"Mohammad" <m@abdulfatah.net> wrote in message
news:11********************@o13g2000cwo.googlegrou ps.com... Do you mean that you want a C# method that would take a string
containing some C# code and then execute it? Or do you mean you want a
C# method that would take an SQL command as a string and execute
against a database?