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				@@ -186,7 +186,7 @@ namespace OASystem.Domain.ViewModels.Groups 
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				         { 
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				             get 
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				             { 
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				-                if (string.IsNullOrEmpty(OriginVal)) return _newValue; 
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				+                if (string.IsNullOrEmpty(OriginVal)) return _newValue.ToString(); 
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				                 if (FieldTypeName.Equals("文本")) 
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				                 { 
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				@@ -195,7 +195,7 @@ namespace OASystem.Domain.ViewModels.Groups 
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				                         OriginVal = _newValue.ToString(); 
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				                     } 
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				-                    if (OriginVal.Equals("-")) return _newValue; 
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				+                    if (OriginVal.Equals("-")) return _newValue == null ? "" : _newValue.ToString(); 
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				                     return OriginVal; 
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				                 } 
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				@@ -217,7 +217,7 @@ namespace OASystem.Domain.ViewModels.Groups 
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				                         } 
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				                         else 
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				                         { 
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				-                            return _newValue; 
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				+                            return _newValue.ToString(); 
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				                         } 
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				                     } 
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