Vb Code Generator Guide

Public Shared Function GenerateSqlInsertBuilder(tableName As String, columnNames As List(Of String)) As String Dim sb As New StringBuilder() sb.AppendLine("Imports System.Data.SqlClient") sb.AppendLine() sb.AppendLine($"Public Class tableNameSqlBuilder") sb.AppendLine(" Public Shared Function BuildInsertCommand(conn As SqlConnection, parameters As Dictionary(Of String, Object)) As SqlCommand") sb.AppendLine($" Dim columns As String = String.Join(" & "","" & ", columnNames.Select(Function(c) $""""c""""))") sb.AppendLine($" Dim valuesPlaceholders As String = String.Join(" & "","" & ", columnNames.Select(Function(c) $"@""c"))") sb.AppendLine($" Dim sql As String = $""INSERT INTO tableName (columns) VALUES (valuesPlaceholders)""") sb.AppendLine(" Dim cmd As New SqlCommand(sql, conn)") sb.AppendLine(" For Each kvp In parameters") sb.AppendLine(" cmd.Parameters.AddWithValue(kvp.Key, kvp.Value)") sb.AppendLine(" Next") sb.AppendLine(" Return cmd") sb.AppendLine(" End Function") sb.AppendLine("End Class") Return sb.ToString() End Function

' Fields & Properties For Each kvp In properties Dim propName As String = kvp.Key Dim dataType As String = kvp.Value Dim fieldName As String = "_" & propName.ToLower() vb code generator

Console.WriteLine("Generation complete. Press any key.") Console.ReadKey() End Sub End Module | Feature | Why It Matters | |--------|----------------| | No external dependencies | Runs on any .NET Framework / .NET Core with VB support. | | Consistent formatting | Produces human-readable, maintainable code. | | Error-aware templates | CSV reader handles missing columns; SQL builder uses parameters (safe). | | Extensible | You can add GenerateValidator , GenerateRepository , etc. | | Self-documenting | Each method clearly names what it builds. | Real-World Extension Idea Marcus later added a JSON schema to VB class converter: | | Error-aware templates | CSV reader handles

Public Shared Function GenerateCsvReader(className As String, delimiter As String) As String Dim sb As New StringBuilder() sb.AppendLine("Imports System.IO") sb.AppendLine("Imports System.Text") sb.AppendLine() sb.AppendLine($"Public Class classNameCsvReader") sb.AppendLine(" Public Shared Function ReadCsv(filePath As String) As List(Of Dictionary(Of String, String))") sb.AppendLine(" Dim results As New List(Of Dictionary(Of String, String))()") sb.AppendLine(" Dim lines As String() = File.ReadAllLines(filePath, Encoding.UTF8)") sb.AppendLine(" If lines.Length = 0 Then Return results") sb.AppendLine($" Dim headers As String() = lines(0).Split(delimiter)") sb.AppendLine(" For i As Integer = 1 To lines.Length - 1") sb.AppendLine(" Dim values As String() = lines(i).Split(delimiter)") sb.AppendLine(" Dim row As New Dictionary(Of String, String)()") sb.AppendLine(" For j As Integer = 0 To headers.Length - 1") sb.AppendLine(" If j < values.Length Then") sb.AppendLine(" row(headers(j)) = values(j)") sb.AppendLine(" Else") sb.AppendLine(" row(headers(j)) = String.Empty") sb.AppendLine(" End If") sb.AppendLine(" Next") sb.AppendLine(" results.Add(row)") sb.AppendLine(" Next") sb.AppendLine(" Return results") sb.AppendLine(" End Function") sb.AppendLine("End Class") Return sb.ToString() End Function | Real-World Extension Idea Marcus later added a

Then Marcus built — a small VB.NET utility that generates repetitive code from simple templates. It saved him 12 hours that week. His boss gave him a bonus. Other devs asked for it. Here is Marcus’s generator, polished and ready for you. The Code: CodeForge.vb (Full Generator) Imports System.Text Imports System.IO ''' <summary> ''' Generates VB.NET boilerplate code from JSON-like definitions. ''' Story: Built to eliminate repetitive CRUD, parsing, and validation code. ''' </summary> Public Class CodeForge

' 3. Generate SQL INSERT builder Dim columns As New List(Of String) From "OrderId", "Product", "Quantity" Dim sqlBuilderCode As String = CodeForge.GenerateSqlInsertBuilder("Orders", columns) CodeForge.SaveToFile(sqlBuilderCode, "C:\Generated\OrdersSqlBuilder.vb")

' Input: "userId": "int", "userName": "string" ' Output: Public Class User ... (auto-generated) That turned his 12-hour-saver into a team-wide tool. Want me to generate a specific VB class for your use case (e.g., REST API wrapper, INI parser, DataTable-to-List mapper)? Just describe the repetitive pattern you’re stuck with.