public void DeleEntGroup(EntGroup group)
 {
     try
     {
         if (group != null)
         {
             ItemGroup ig = this.FindItemGroup(group);
             if (ig != null)
             {
                 this.listEntGroup.Items.Remove(ig);
             }
         }
     }
     catch (System.Exception ex)
     {
         if (this.logger != null)
         {
             this.logger.Error(ex);
         }
     }
 }
 public void AddEntGroup(EntGroup group)
 {
     try
     {
         if (group != null)
         {
             if (null == this.FindItemGroup(group))
             {
                 ItemGroup ig = new ItemGroup(group);
                 this.listEntGroup.Items.Add(ig);
             }
         }
     }
     catch (System.Exception ex)
     {
         if (this.logger != null)
         {
             this.logger.Error(ex);
         }
     }
 }
 public void AddEntGroup(EntGroup group)
 {
     try
     {
         if (group != null)
         {
             if (null == this.FindItemGroup(group))
             {
                 ItemGroup ig = new ItemGroup(group);
                 this.listEntGroup.Items.Add(ig);
             }
         }
     }
     catch (System.Exception ex)
     {
         if (this.logger != null)
         {
             this.logger.Error(ex);
         }
     }
 }