.net - How can I find the type of T in a c# Generic collection of T when all I know is the type of the collection? -

-

I have an array of propertyInfo, representing property properties. T & gt; Some of these properties are of ICollection , but T is different across properties - I have some ICollection & LT; String & gt; , some ICollection & LT; Integer & gt; , etc.

I can easily identify which type of property are ICollection & lt ;. & Gt; Code>, using GetGenericTypeDefinition () method on , but I'm feeling it 

  id document item propertyIn [document] documents = item .GetType () GetProperties () .; PropertyInfo property = documentProperties.First (); Type typeOfProperty = property.PropertyType; If (typeOfProperty.IsGenericType) {type typeofproperty = property Property Type GetGenericTypeDefinition (); If (typeOfProperty == typeof (ICollection & lt; & gt;) {// detect the type of ICollection & lt t; t & gt; // and work accordingly}}    
 
 
 You know that this  ICollection must be & lt; x & gt;  but do not know X , That is quite easy with:  
  if (typeOfProperty.IsGenericype) {type genericDefinition = typeOfProperty.GetGenericTypeDefinition (); if (genericDefinition == typeof (ICollection & lt; & gt;) { // Note that we are calling GetGenericArguments at typeOfProperty, // not genericDefinition type typeArgument = typeOfProperty.GetGenericArgumen Ts () [0]; // typeArgument now you want ...}}   when there is some type of type 
 it becomes difficult to implement    Icicle>  but it may be normal. It seems that you are in a better position :)

Comments

Post a Comment

Popular posts from this blog

mysql - BLOB/TEXT column 'value' used in key specification without a key length -

-
I have developed an extension which works up to 1.6 on Magren (I'm trying Enterprise Edition, And I think the community is the same problem, because it is the same code). In my install script, I see the $ installer-> gt; CreateEntityTables ($ this- & gt; getTable ('alphanum / info')); The installation is done until it is not in the _text unit table. It crashed there! It turns out that when I log in to SQL and run it via PHPmyadmin, then this error is: Blob / Text column 'value' is used without the key 'key' . I saw the code there, and this is what is trying to create an index on the value column: -> addIndex ($ this- & gt; getIdxName ($ eavTableName, array ( 'attribute_id array (' attribute_id ',' value ')) - & gt; addIndex ($ this- & gt; getIdxName ($ eavTableName, array (' entity_type_id ' , 'Value')), array ('entity_type_id', 'value')) If there is no if statement is n...
Read more

c# - Using Vici cool Storage with monodroid -

-
Oh, for the moment I am not sure how it is officially supported, but for the success of the people Using Monodroid Vic Cool Storage I am able to leave and compile assemblies in my project, but while trying to use some classes, the errors of time have to be gathered. Especially when trying to connect like the example for Mono Touch string dbName = path. Cobain (environment. Gatefolder path (environment specialfolder personal), "mydb.db3"); // The following line will be called coolestation, where is the database, // to make it if it does not exist, and call a delegate that creates the necessary tables (only when the database file was newly created //) CSConfig.SetDB (DbName, true, () => {CSDatabase.ExecuteNonQuery ("Subscriber Integer Primary Key Attribute, Name Text (50) No, Number, Date First Text (30)");); There is no difference when I try to use the methods of CSConfig and when I cscfif If I try to pass 3 aggregates to STDB (3) then I get the invalid ...
Read more

c# - Confused over DLL entry points (entry point not found exception) -

-
I'm learning how to use DLL in C #. I have a very simple DLL to do my basic test. // using the MainForm.cs system; Using System.Collections.Generic; Using System.ComponentModel; Using System.Data; Using System.Drawing; Using System.Linq; Using System.Text; Using System.Windows.Forms; Using System.Runtime.InteropServices; Namespace DLL_Test {public partial class} Form 1: Form {{DllImport ("TestDLL.dll", EntryPoint = "? @ @ YGHHH Add @, Accurate Spelling = True, Calling Communication = Calling Conference. STCL}] Add public static extern int ( Int a, int b); public form 1 () {initialization ();} private zeros button 1_Click (object sender, eventArgs e) {int num; try {num = add (2, 3); RichTextBox1.AppendText (num. ToString () + "\ n");} Hold (DllNotFoundException Pre) {Message Box.Show (ex.ToString ());} Hold (EntryPointNotFoundException Pre) {Message Box.Show (ex.ToString ())}} }} more DLL code: // TestDLL.cpp __declspec (dllexport) Add int __std...
Read more