This is a typical C# source which basically explains interconnection between the windows forms.(Muti-form program).This includes an example for setting up text fields of main form using other sub forms.

PassBetweenForms
................\PassBetweenForms
................\................\bin
................\................\...\Debug
................\................\...\.....\PassBetweenForms.exe
................\................\...\.....\PassBetweenForms.pdb
................\................\...\.....\PassBetweenForms.vshost.exe
................\................\...\Release
................\................\...\.......\PassBetweenForms.exe
................\................\...\.......\PassBetweenForms.pdb
................\................\frmAddress.cs
................\................\frmAddress.Designer.cs
................\................\frmAddress.resx
................\................\frmID.cs
................\................\frmID.Designer.cs
................\................\frmID.resx
................\................\frmMain.cs
................\................\frmMain.Designer.cs
................\................\frmMain.resx
................\................\obj
................\................\...\Debug
................\................\...\.....\PassBetweenForms.csproj.GenerateResource.Cache
................\................\...\.....\PassBetweenForms.exe
................\................\...\.....\PassBetweenForms.frmAddress.resources
................\................\...\.....\PassBetweenForms.frmID.resources
................\................\...\.....\PassBetweenForms.frmMain.resources
................\................\...\.....\PassBetweenForms.pdb
................\................\...\.....\PassBetweenForms.Properties.Resources.resources
................\................\...\.....\Refactor
................\................\...\.....\TempPE
................\................\...\PassBetweenForms.csproj.FileList.txt
................\................\...\Release
................\................\...\.......\PassBetweenForms.csproj.GenerateResource.Cache
................\................\...\.......\PassBetweenForms.exe
................\................\...\.......\PassBetweenForms.frmAddress.resources
................\................\...\.......\PassBetweenForms.frmID.resources
................\................\...\.......\PassBetweenForms.frmMain.resources
................\................\...\.......\PassBetweenForms.pdb
................\................\...\.......\PassBetweenForms.Properties.Resources.resources
................\................\...\.......\TempPE
................\................\PassBetweenForms.csproj
................\................\Program.cs
................\................\Properties
................\................\..........\AssemblyInfo.cs
................\................\..........\Resources.Designer.cs
................\................\..........\Resources.resx
................\................\..........\Settings.Designer.cs
................\................\..........\Settings.settings
................\PassBetweenForms.gpState
................\PassBetweenForms.sln

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