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在水晶报表中添加合计字段\CrystalReportsApplication1\CrystalReport1.cs
........................\..........................\CrystalReport1.rpt
........................\..........................\CrystalReportsApplication1.csproj
........................\..........................\CrystalReportsApplication1.csproj.user
........................\..........................\Form1.cs
........................\..........................\Form1.Designer.cs
........................\..........................\Form1.resx
........................\..........................\obj\CrystalReportsApplication1.csproj.FileList.txt
........................\..........................\Program.cs
........................\..........................\...perties\AssemblyInfo.cs
........................\..........................\..........\Resources.Designer.cs
........................\..........................\..........\Resources.resx
........................\..........................\..........\Settings.Designer.cs
........................\..........................\..........\Settings.settings
........................\CrystalReportsApplication1.sln
........................\CrystalReportsApplication1.suo
........................\..........................\bin\Debug
........................\..........................\obj\Debug
........................\..........................\bin
........................\..........................\obj
........................\..........................\Properties
........................\CrystalReportsApplication1
在水晶报表中添加合计字段