By adding the parent node and other four aspects of the A* algorithm for the corresponding complete set of improvements can solve the problem

Astar
.....\Astar
.....\Astar.sln
.....\Astar.suo
.....\.....\Array.cs
.....\.....\astar.cs
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.....\.....\Astar.csproj.user
.....\.....\Astar_TemporaryKey.pfx
.....\.....\beijing.jpg
.....\.....\bin
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.....\.....\...\.....\beijing.jpg
.....\.....\createmap.cs
.....\.....\createmap.Designer.cs
.....\.....\createmap.resx
.....\.....\obj
.....\.....\...\Debug
.....\.....\...\.....\Astar.application
.....\.....\...\.....\Astar.createmap.resources
.....\.....\...\.....\Astar.csproj.FileListAbsolute.txt
.....\.....\...\.....\Astar.csproj.GenerateResource.Cache
.....\.....\...\.....\Astar.exe
.....\.....\...\.....\Astar.exe.manifest
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.....\.....\...\.....\Astar.Properties.Resources.resources
.....\.....\...\.....\Astar.启动.resources
.....\.....\...\.....\Refactor
.....\.....\...\.....\ResolveAssemblyReference.cache
.....\.....\...\.....\TempPE
.....\.....\Program.cs
.....\.....\Properties
.....\.....\..........\AssemblyInfo.cs
.....\.....\..........\Resources.Designer.cs
.....\.....\..........\Resources.resx
.....\.....\..........\Settings.Designer.cs
.....\.....\..........\Settings.settings
.....\.....\start.cs
.....\.....\启动.cs
.....\.....\启动.Designer.cs
.....\.....\启动.resx
.....\ceshi.txt
.....\ceshi1.txt
.....\ceshi3.txt

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