Added new function "merge rows"

DataTableConverter/Assisstant/ThreadHelper.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DataTableConverter.Assisstant
+{
+    class ThreadHelper
+    {
+        private List<Thread> Threads = new List<Thread>();
+        private readonly Action Start, End;
+        internal bool Abort;
+        internal static ThreadAction Threadaction;
+
+        internal ThreadHelper(Action start, Action end)
+        {
+            Start = start;
+            End = end;
+        }
+
+        internal void StartThread(ThreadAction action)
+        {
+            Thread thread = new Thread(() =>
+            {
+                try
+                {
+                    Start();
+                    Thread.CurrentThread.IsBackground = true;
+
+                    action(ref Abort);
+                }
+                catch (Exception ex)
+                {
+                    ErrorHelper.LogMessage(ex);
+                }
+                finally
+                {
+                    End();
+                    Threads.Remove(Thread.CurrentThread);
+                }
+            });
+            Threads.Add(thread);
+            thread.Start();
+        }
+
+        internal delegate void ThreadAction(ref bool abort);
+    }
+}

DataTableConverter/Classes/DataRowArray.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DataTableConverter.Classes
+{
+    class DataRowArray
+    {
+        internal List<List<string>> Values;
+        internal DataRow DataRow;
+
+        internal DataRowArray(DataRow dataRow, List<string> values)
+        {
+            Values = new List<List<string>>
+            {
+                values
+            };
+            DataRow = dataRow;
+        }
+
+        internal void Add(List<string> values)
+        {
+            Values.Add(values);
+        }
+
+    }
+}

DataTableConverter/DataTableConverter.csproj

@@ -74,10 +74,12 @@
     <Compile Include="Assisstant\ErrorHelper.cs" />
     <Compile Include="Assisstant\HistoryHelper.cs" />
     <Compile Include="Assisstant\StringComparer.cs" />
+    <Compile Include="Assisstant\ThreadHelper.cs" />
     <Compile Include="Assisstant\UpdateHelper.cs" />
     <Compile Include="Assisstant\WorkflowHelper.cs" />
     <Compile Include="Classes\CellMatrix.cs" />
     <Compile Include="Assisstant\ImportHelper.cs" />
+    <Compile Include="Classes\DataRowArray.cs" />
     <Compile Include="Classes\History.cs" />
     <Compile Include="Classes\HistoryStates.cs" />
     <Compile Include="Classes\NotFoundHeaders.cs" />
@@ -147,6 +149,12 @@
     <Compile Include="View\Formula.Designer.cs">
       <DependentUpon>Formula.cs</DependentUpon>
     </Compile>
+    <Compile Include="View\MergeColumns.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="View\MergeColumns.Designer.cs">
+      <DependentUpon>MergeColumns.cs</DependentUpon>
+    </Compile>
     <Compile Include="View\MergeTable.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -225,6 +233,9 @@
     <EmbeddedResource Include="View\Formula.resx">
       <DependentUpon>Formula.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="View\MergeColumns.resx">
+      <DependentUpon>MergeColumns.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="View\MergeTable.resx">
       <DependentUpon>MergeTable.cs</DependentUpon>
     </EmbeddedResource>