992137-How to convert database into dataset and perform mail merge using created data set using DocIO

Mail-Merge/Convert_Database_into_Dataset_and_Perform_Mailmerge/.NET/Convert_Database_into_Dataset_and_Perform_Mailmerge.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.37301.10 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Convert_Database_into_Dataset_and_Perform_Mailmerge", "Convert_Database_into_Dataset_and_Perform_Mailmerge\Convert_Database_into_Dataset_and_Perform_Mailmerge.csproj", "{F466E5AF-87B2-BED0-A680-8B3305676943}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{F466E5AF-87B2-BED0-A680-8B3305676943}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F466E5AF-87B2-BED0-A680-8B3305676943}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F466E5AF-87B2-BED0-A680-8B3305676943}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F466E5AF-87B2-BED0-A680-8B3305676943}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3CD5B0D7-D2A2-4D43-8C8D-3239CD3DE50D}
+	EndGlobalSection
+EndGlobal

Mail-Merge/Convert_Database_into_Dataset_and_Perform_Mailmerge/.NET/Convert_Database_into_Dataset_and_Perform_Mailmerge/Convert_Database_into_Dataset_and_Perform_Mailmerge.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.DocIO.Net.Core" Version="*" />
+    <PackageReference Include="System.Data.OleDb" Version="*" />
+  </ItemGroup>
+	<ItemGroup>
+		<None Update="Data\Template.docx">
+			<CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
+
+		<None Update="Output\.gitkeep">
+			<CopyToOutputDirectory>Always</CopyToOutputDirectory>
+		</None>
+	</ItemGroup>
+
+</Project>

Mail-Merge/Convert_Database_into_Dataset_and_Perform_Mailmerge/.NET/Convert_Database_into_Dataset_and_Perform_Mailmerge/Output/gitkeep.txt

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+

Mail-Merge/Convert_Database_into_Dataset_and_Perform_Mailmerge/.NET/Convert_Database_into_Dataset_and_Perform_Mailmerge/Program.cs

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+using Syncfusion.DocIO;
+using Syncfusion.DocIO.DLS;
+using System.Collections;
+using System.Data;
+using System.Data.OleDb;
+
+namespace Convert_Database_into_Dataset_and_Perform_Mailmerge
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            // Load the word document
+            using (FileStream sourceStreamPath = new FileStream(Path.GetFullPath(@"../../../Data/Template.docx"), FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+            {
+                //Creating a new document.
+                using (WordDocument document = new WordDocument(sourceStreamPath, FormatType.Docx))
+                {
+
+                    string dataBase = Path.GetFullPath(@"../../../Data/EmployeeDetails.mdb");
+
+                    // Get all data
+                    DataSet ds = GetAllTables(dataBase);
+                    //ArrayList contains the list of commands
+                    ArrayList commands = GetCommands();
+                    //Executes the mail merge
+                    document.MailMerge.ExecuteNestedGroup(ds, commands);
+                    //Saves the Word document to MemoryStream.
+                    using (FileStream outputStream = new FileStream(Path.GetFullPath(@"../../../Output/Result.docx"), FileMode.Create, FileAccess.ReadWrite))
+                    {
+                        document.Save(outputStream, FormatType.Docx);
+                    }
+                }
+            }
+        } 
+
+        /// <summary>
+        /// Get the commands to execute with database.
+        /// </summary>
+        static ArrayList GetCommands()
+        {
+            //ArrayList contains the list of commands
+            ArrayList commands = new ArrayList();
+
+            // Parent table: Employees (no filter, so empty string)
+            commands.Add(new DictionaryEntry("Employees", ""));
+
+            // Customers filtered by EmployeeID
+            commands.Add(new DictionaryEntry("Customers", "EmployeeID = %Employees.EmployeeID%"));
+
+            // Orders filtered by CustomerID
+            commands.Add(new DictionaryEntry("Orders", "CustomerID = %Customers.CustomerID%"));
+
+            return commands;
+        }
+        //Retrieves all required tables from the MDB database and prepares hierarchy commands for DocIO mail merge.
+        static DataSet GetAllTables(string dataBase)
+        {
+            // Connection string using ACE OLEDB provider (64-bit compatible)
+            string connectionString = $"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={dataBase};Persist Security Info=False;";
+            // DataSet to hold all tables
+            DataSet ds = new DataSet();
+
+            using (OleDbConnection conn = new OleDbConnection(connectionString))
+            {
+                conn.Open();
+                // Tables to fetch from MDB
+                string[] tables = { "Employees", "Customers", "Orders" };
+                // Loop through each table and fill DataSet
+                foreach (string tableName in tables)
+                {
+                    string sqlQuery = $"SELECT * FROM {tableName}";
+                    OleDbDataAdapter adapter = new OleDbDataAdapter(sqlQuery, conn);
+                    adapter.Fill(ds, tableName);
+                }
+            }
+            return ds;
+        }
+    }
+}