Creating a project

Bank/Bank.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34723.18
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BankDataModels", "BankDataModels\BankDataModels.csproj", "{B74F0734-6D5B-41D5-AF9B-23CF7535C52F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B74F0734-6D5B-41D5-AF9B-23CF7535C52F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B74F0734-6D5B-41D5-AF9B-23CF7535C52F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B74F0734-6D5B-41D5-AF9B-23CF7535C52F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B74F0734-6D5B-41D5-AF9B-23CF7535C52F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F3A2A0A8-F786-4DF8-BF7C-490B011E3CBF}
+	EndGlobalSection
+EndGlobal

Bank/BankDataModels/BankDataModels.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

Bank/BankDataModels/Class1.cs

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+namespace BankDataModels
+{
+    public class Class1
+    {
+
+    }
+}