Description: Passing messages between the two forms, example of this is No. 2 on the 1st form controls on the form a progress bar
窗体传值
........\bin
........\...\Debug
........\...\.....\窗体传值.exe
........\...\.....\窗体传值.pdb
........\...\.....\窗体传值.vshost.exe
........\
Form1.cs
........\
Form1.Designer.cs
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Form1.resx
........\
Form2.cs
........\
Form2.Designer.cs
........\
Form2.resx
........\obj
........\...\Debug
........\...\.....\TempPE
........\...\.....\窗体传值.csproj.GenerateResource.Cache
........\...\.....\窗体传值.exe
........\...\.....\窗体传值.Form1.resources
........\...\.....\窗体传值.Form2.resources
........\...\.....\窗体传值.pdb
........\...\.....\窗体传值.Properties.Resources.resources
........\...\窗体传值.csproj.FileList.txt
........\...\窗体传值.csproj.FileListAbsolute.txt
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Program.cs
........\Properties
........\..........\
AssemblyInfo.cs
........\..........\
Resources.Designer.cs
........\..........\
Resources.resx
........\..........\
Settings.Designer.cs
........\..........\
Settings.settings
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窗体传值.csproj
窗体传值.sln