header in datagridview winform to achieve multi-dimensional

MutiHead\MutiHead\Properties\Resources.resx
........\........\..........\Settings.settings
........\........\..........\AssemblyInfo.cs
........\........\..........\Resources.Designer.cs
........\........\..........\Settings.Designer.cs
........\........\Form1.Designer.cs
........\........\MutiHead.csproj
........\........\bin\Debug\MutiHead.vshost.exe
........\........\...\.....\MutiHead.exe
........\........\...\.....\MutiHead.pdb
........\........\...\.....\DataGridViewEx.dll
........\........\...\.....\DataGridViewEx.pdb
........\........\obj\Debug\MutiHead.Form1.resources
........\........\...\.....\MutiHead.Properties.Resources.resources
........\........\...\.....\MutiHead.exe
........\........\...\.....\MutiHead.csproj.GenerateResource.Cache
........\........\...\.....\MutiHead.pdb
........\........\...\.....\ResolveAssemblyReference.cache
........\........\...\MutiHead.csproj.FileList.txt
........\........\Form1.resx
........\........\Form1.cs
........\........\Program.cs
........\MutiHead.sln
........\MutiHead.suo
........\DataGridViewEx\Properties\AssemblyInfo.cs
........\..............\DataGridViewEx.csproj
........\..............\bin\Debug\DataGridViewEx.dll
........\..............\...\.....\DataGridViewEx.pdb
........\..............\obj\Debug\DataGridViewEx.pdb
........\..............\...\.....\DataGridViewEx.dll
........\..............\...\DataGridViewEx.csproj.FileList.txt
........\..............\MutiRowHeadDataGridView.cs
........\..............\MutiRowHeadDataGridView.Designer.cs
........\MutiHead\obj\Debug\TempPE
........\........\...\.....\Refactor
........\DataGridViewEx\obj\Debug\TempPE
........\MutiHead\bin\Debug
........\........\obj\Debug
........\DataGridViewEx\bin\Debug
........\..............\obj\Debug
........\MutiHead\Properties
........\........\bin
........\........\obj
........\DataGridViewEx\Properties
........\..............\bin
........\..............\obj
........\MutiHead
........\DataGridViewEx
MutiHead

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