#21

WelsonJS.Toolkit/WelsonJS.Toolkit/Prompt.cs

@@ -0,0 +1,29 @@
+using System.Windows.Forms;
+
+namespace WelsonJS
+{
+    public static class Prompt
+    {
+        public static string ShowDialog(string text, string caption)
+        {
+            Form prompt = new Form()
+            {
+                Width = 500,
+                Height = 150,
+                FormBorderStyle = FormBorderStyle.FixedDialog,
+                Text = caption,
+                StartPosition = FormStartPosition.CenterScreen
+            };
+            Label textLabel = new Label() { Left = 50, Top = 20, Text = text };
+            TextBox textBox = new TextBox() { Left = 50, Top = 50, Width = 400 };
+            Button confirmation = new Button() { Text = "Ok", Left = 350, Width = 100, Top = 70, DialogResult = DialogResult.OK };
+            confirmation.Click += (sender, e) => { prompt.Close(); };
+            prompt.Controls.Add(textBox);
+            prompt.Controls.Add(confirmation);
+            prompt.Controls.Add(textLabel);
+            prompt.AcceptButton = confirmation;
+
+            return prompt.ShowDialog() == DialogResult.OK ? textBox.Text : "";
+        }
+    }
+}

WelsonJS.Toolkit/WelsonJS.Toolkit/Toolkit.cs

@@ -13,17 +13,21 @@
  *         - https://stackoverflow.com/questions/9501022/cannot-create-an-object-from-a-active-x-component
  *         - https://stackoverflow.com/questions/13547639/return-window-handle-by-its-name-title
  *         - https://blog.naver.com/zlatmgpdjtiq/222016292758
+ *         - https://stackoverflow.com/questions/5427020/prompt-dialog-in-windows-forms
  */
 
 using System;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
+using System.Windows.Forms;
 
 namespace WelsonJS
 {
     [ComVisible(true)]
     public class Toolkit
     {
+        private static string ApplicationName = "WelsonJS";
+
         [DllImport("user32.dll")]
         public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
 
@@ -113,5 +117,25 @@ namespace WelsonJS
 
             return result;
         }
+
+        [ComVisible(true)]
+        public int Alert(string message)
+        {
+            MessageBox.Show(message, ApplicationName);
+            return 0;
+        }
+
+        [ComVisible(true)]
+        public bool Confirm(string message)
+        {
+            return (MessageBox.Show(message, ApplicationName, MessageBoxButtons.YesNo) == DialogResult.Yes);
+        }
+
+        [ComVisible(true)]
+        public string Prompt(string message, string _default = "")
+        {
+            string result = WelsonJS.Prompt.ShowDialog(message, ApplicationName);
+            return (result == "" ? _default : result);
+        }
     }
 }

WelsonJS.Toolkit/WelsonJS.Toolkit/WelsonJS.Toolkit.csproj

@@ -43,8 +43,10 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
+    <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Prompt.cs" />
     <Compile Include="Toolkit.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>