System

Aim:-

Demonstrate how to gather information on various types included in any assembly by using the System.Reflection namespace and some main.NET base classes.

Source code:Customer. Class using System; namespace Customer { public class Client { public Client() { } public string GetClient(String ClientID) { return "ID is blank"; } } } worker.class using System; namespace Employee { public class Worker { public Worker() { } public string GetWorker(String WorkerID) { return "ID is blank"; } } }

individual.class using System; namespace Person { public class Individual { public Individual() { } public string GetIndividual(String IndividualID) { return "ID is blank"; } } }

reflectionform.cs using using using using using using using

System; System.Reflection; System.Drawing; System.Collections; System.ComponentModel; System.Windows.Forms; System.Data;

namespace Reflection { public class ReflectionForm : System.Windows.Forms.Form { private System.Windows.Forms.Button GetAssemblyInfo; private System.Windows.Forms.ComboBox listAssemblies; private System.Windows.Forms.Label label1; private System.Windows.Forms.ListBox listTypes; private System.ComponentModel.Container components = null; private Type[] PersonTypes; private Type[] EmployeeTypes; private Type[] CustomerTypes; public ReflectionForm() { InitializeComponent(); } protected override void Dispose( bool disposing ) { if( disposing ) {if (components != null) { components.Dispose(); } base.Dispose( disposing ); } #region Windows Form Designer generated code private void InitializeComponent() { this.GetAssemblyInfo = new System.Windows.Forms.Button(); this.listAssemblies = new System.Windows.Forms.ComboBox(); this.label1 = new System.Windows.Forms.Label(); this.listTypes = new System.Windows.Forms.ListBox(); this.SuspendLayout(); this.GetAssemblyInfo.Location = new System.Drawing.Point(280, 40); this.GetAssemblyInfo.Name = "GetAssemblyInfo"; this.GetAssemblyInfo.Size = new System.Drawing.Size(75, 23); this.GetAssemblyInfo.TabIndex = 0; this.GetAssemblyInfo.Text = "Get Info"; this.GetAssemblyInfo.Click += new System.EventHandler(this.btnGetInfo_Click); DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList; this.listAssemblies.Items.AddRange(new object[] { "Person", "Employee", "Customer"});

this.listAssemblies.Location = new System.Drawing.Point(144, 40); this.listAssemblies.Name = "listAssemblies"; this.listAssemblies.Size = new System.Drawing.Size(121, 21); this.listAssemblies.TabIndex = 1; this.listAssemblies.SelectedIndexChanged += new System.EventHandler(this.cboAssemblies_SelectedIndexChanged); this.label1.Location = new System.Drawing.Point(16, 40); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(112, 16); this.label1.TabIndex = 2; this.label1.Text = "Select An Assembly: "; this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight; this.listTypes.Location = new System.Drawing.Point(8, 88); this.listTypes.Name = "listTypes"; this.listTypes.Size = new System.Drawing.Size(376, 459); this.listTypes.TabIndex = 3; this.listTypes.SelectedIndexChanged += new System.EventHandler(this.listTypes_SelectedIndexChanged); this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(479, 559); this.Controls.Add(this.listTypes); this.Controls.Add(this.label1); this.Controls.Add(this.listAssemblies); this.Controls.Add(this.GetAssemblyInfo); this.Name = "ReflectionForm"; this.Text = "Reflection Sample"; this.Load += new System.EventHandler(this.ReflectionForm_Load); this.ResumeLayout(false); } #endregion static void Main() {Application.Run(new ReflectionForm()); } private void btnGetInfo_Click(object sender, System.EventArgs e) { string SelectedAssembly = this.listAssemblies.SelectedItem.ToString(); if(SelectedAssembly == "Person") { listTypes.Items.Clear(); LoadTypeInfo(PersonTypes); } else if (SelectedAssembly == "Employee") { listTypes.Items.Clear(); LoadTypeInfo(EmployeeTypes); } else if (SelectedAssembly == "Customer") { listTypes.Items.Clear(); LoadTypeInfo(CustomerTypes); } else { listTypes.Items.Clear(); } }

private void LoadTypeInfo(Type[] AssemblyType) { foreach(Type baseType in AssemblyType) { listTypes.Items.Add("Assembly Type: "+baseType.FullName+" ("+baseType.UnderlyingSystemType+")"); listTypes.Items.Add("Base Type: "+baseType.BaseType); listTypes.Items.Add("Serializable: " + baseType.IsSerializable); listTypes.Items.Add("Abstract: " + baseType.IsAbstract); listTypes.Items.Add("Class: " + baseType.IsClass); listTypes.Items.Add("Public: " + baseType.IsPublic); listTypes.Items.Add("Sealed: " + baseType.IsSealed); System.Reflection.TypeAttributes baseTypeAttributes= baseType.Attributes; listTypes.Items.Add(""); listTypes.Items.Add("Attributes:"); listTypes.Items.Add(baseTypeAttributes.ToString()); PropertyInfo[] propInfo = baseType.GetProperties(); MethodInfo[] methodInfo = baseType.GetMethods(); listTypes.Items.Add(""); listTypes.Items.Add("Properties:"); foreach(PropertyInfo prop in propInfo) { listTypes.Items.Add("Name: " +prop.Name); listTypes.Items.Add("Member Type: " +prop.MemberType); listTypes.Items.Add("Property Type: " +prop.PropertyType); listTypes.Items.Add("Read: " +prop.CanRead); listTypes.Items.Add("Write: " +prop.CanWrite); listTypes.Items.Add(""); } listTypes.Items.Add(""); listTypes.Items.Add("Methods:"); foreach(MethodInfo method in methodInfo) { listTypes.Items.Add("Name: " +method.Name); listTypes.Items.Add("Member Type: " +method.MemberType); listTypes.Items.Add("Return Type: " +method.ReturnType); listTypes.Items.Add("Public: " +method.IsPublic); listTypes.Items.Add("Private: " +method.IsPrivate); listTypes.Items.Add("Abstract: " +method.IsAbstract); listTypes.Items.Add("Virtual: " +method.IsVirtual); listTypes.Items.Add("Static: " +method.IsStatic); listTypes.Items.Add(""); } } } private void ReflectionForm_Load(object sender, System.EventArgs e) { Assembly PersonAssembly = Assembly.LoadFrom("..\\..\\Person.dll"); PersonTypes = PersonAssembly.GetTypes(); Assembly EmployeeAssembly = Assembly.LoadFrom("..\\..\\Employee.dll"); EmployeeTypes = EmployeeAssembly.GetTypes(); Assembly CustomerAssembly = Assembly.LoadFrom("..\\..\\Customer.dll"); CustomerTypes = CustomerAssembly.GetTypes(); listAssemblies.SelectedIndex=0; }

private void cboAssemblies_SelectedIndexChanged(object sender, System.EventArgs e) { } private void listTypes_SelectedIndexChanged(object sender, EventArgs e) { } } }

Output:-

Result:- The

programme is executed successfully without any errors.