Add project files.

App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <configSections>
+        <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
+            <section name="DragAndDropMultipleFiles.My.MySettings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
+        </sectionGroup>
+    </configSections>
+    <startup>
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
+    </startup>
+    <userSettings>
+        <DragAndDropMultipleFiles.My.MySettings>
+            <setting name="Exec" serializeAs="String">
+                <value />
+            </setting>
+            <setting name="Param" serializeAs="String">
+                <value />
+            </setting>
+            <setting name="CleafAfterExec" serializeAs="String">
+                <value>False</value>
+            </setting>
+            <setting name="ClearAfterDrag" serializeAs="String">
+                <value>False</value>
+            </setting>
+            <setting name="List" serializeAs="String">
+                <value />
+            </setting>
+        </DragAndDropMultipleFiles.My.MySettings>
+    </userSettings>
+</configuration>

DragAndDropMultipleFiles.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.28729.10
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "DragAndDropMultipleFiles", "DragAndDropMultipleFiles.vbproj", "{66095876-1FB7-4614-AFA8-F091F29F4914}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{66095876-1FB7-4614-AFA8-F091F29F4914}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{66095876-1FB7-4614-AFA8-F091F29F4914}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{66095876-1FB7-4614-AFA8-F091F29F4914}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{66095876-1FB7-4614-AFA8-F091F29F4914}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {BA272BA2-D3E0-412E-872B-B0E33AC50F7E}
+	EndGlobalSection
+EndGlobal

DragAndDropMultipleFiles.vbproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{66095876-1FB7-4614-AFA8-F091F29F4914}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <StartupObject>DragAndDropMultipleFiles.My.MyApplication</StartupObject>
+    <RootNamespace>DragAndDropMultipleFiles</RootNamespace>
+    <AssemblyName>DragAndDropMultipleFiles</AssemblyName>
+    <FileAlignment>512</FileAlignment>
+    <MyType>WindowsForms</MyType>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <DefineDebug>true</DefineDebug>
+    <DefineTrace>true</DefineTrace>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DocumentationFile>DragAndDropMultipleFiles.xml</DocumentationFile>
+    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <DefineDebug>false</DefineDebug>
+    <DefineTrace>true</DefineTrace>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DocumentationFile>DragAndDropMultipleFiles.xml</DocumentationFile>
+    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionExplicit>On</OptionExplicit>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionCompare>Binary</OptionCompare>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionStrict>Off</OptionStrict>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionInfer>On</OptionInfer>
+  </PropertyGroup>
+  <PropertyGroup>
+    <ApplicationIcon>utilities-terminal.ico</ApplicationIcon>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Deployment" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Net.Http" />
+  </ItemGroup>
+  <ItemGroup>
+    <Import Include="Microsoft.VisualBasic" />
+    <Import Include="System" />
+    <Import Include="System.Collections" />
+    <Import Include="System.Collections.Generic" />
+    <Import Include="System.Data" />
+    <Import Include="System.Drawing" />
+    <Import Include="System.Diagnostics" />
+    <Import Include="System.Windows.Forms" />
+    <Import Include="System.Linq" />
+    <Import Include="System.Xml.Linq" />
+    <Import Include="System.Threading.Tasks" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="frmMain.vb">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="frmMain.Designer.vb">
+      <DependentUpon>frmMain.vb</DependentUpon>
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="My Project\AssemblyInfo.vb" />
+    <Compile Include="My Project\Application.Designer.vb">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Application.myapp</DependentUpon>
+    </Compile>
+    <Compile Include="My Project\Resources.Designer.vb">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="My Project\Settings.Designer.vb">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="frmMain.resx">
+      <DependentUpon>frmMain.vb</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="My Project\Resources.resx">
+      <Generator>VbMyResourcesResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.vb</LastGenOutput>
+      <CustomToolNamespace>My.Resources</CustomToolNamespace>
+      <SubType>Designer</SubType>
+    </EmbeddedResource>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="My Project\Application.myapp">
+      <Generator>MyApplicationCodeGenerator</Generator>
+      <LastGenOutput>Application.Designer.vb</LastGenOutput>
+    </None>
+    <None Include="My Project\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <CustomToolNamespace>My</CustomToolNamespace>
+      <LastGenOutput>Settings.Designer.vb</LastGenOutput>
+    </None>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="utilities-terminal.ico" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
+</Project>

My Project/Application.myapp

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+<?xml version="1.0" encoding="utf-8"?>
+<MyApplicationData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <MySubMain>true</MySubMain>
+  <MainForm>frmMain</MainForm>
+  <SingleInstance>false</SingleInstance>
+  <ShutdownMode>0</ShutdownMode>
+  <EnableVisualStyles>true</EnableVisualStyles>
+  <AuthenticationMode>0</AuthenticationMode>
+  <SaveMySettingsOnExit>true</SaveMySettingsOnExit>
+</MyApplicationData>

My Project/AssemblyInfo.vb

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+Imports System
+Imports System.Reflection
+Imports System.Runtime.InteropServices
+
+' General Information about an assembly is controlled through the following
+' set of attributes. Change these attribute values to modify the information
+' associated with an assembly.
+
+' Review the values of the assembly attributes
+
+<Assembly: AssemblyTitle("DragAndDropMultipleFiles")>
+<Assembly: AssemblyDescription("")>
+<Assembly: AssemblyCompany("")>
+<Assembly: AssemblyProduct("DragAndDropMultipleFiles")>
+<Assembly: AssemblyCopyright("Copyright ©  2020")>
+<Assembly: AssemblyTrademark("")>
+
+<Assembly: ComVisible(False)>
+
+'The following GUID is for the ID of the typelib if this project is exposed to COM
+<Assembly: Guid("448c3780-a00a-4092-aba8-970fedce8c75")>
+
+' Version information for an assembly consists of the following four values:
+'
+'      Major Version
+'      Minor Version
+'      Build Number
+'      Revision
+'
+' You can specify all the values or you can default the Build and Revision Numbers
+' by using the '*' as shown below:
+' <Assembly: AssemblyVersion("1.0.*")>
+
+<Assembly: AssemblyVersion("1.1.0.0")>
+<Assembly: AssemblyFileVersion("1.1.0.0")>