[Solved] Problem with creating button or image in ChildTableDefinitions

[Serg]

Hi. I have no problems with viewing buttons or images in my ChildTableDefinitions. I have upadeted controls to newest version and there no buttons in the cells just text. What I have to do?

Here the code for Button.

 public class ButtonDataColumn : GridViewDataColumn
    {
        public string Content { get; set; }
        public RoutedEventHandler ButtonClick { get; set; }
        public int ButtonWidth { get; set; }

        public ButtonDataColumn(string content, RoutedEventHandler buttonClick, int buttonWidth)
        {
            Content = content;
            ButtonClick = buttonClick;
            ButtonWidth = buttonWidth;
        }
        public override FrameworkElement CreateCellElement(GridViewCell cell, object dataItem)
        {
            Button btn = new Button();
            btn.Content = Content;
            btn.Height = 30;        
            btn.Click += ButtonClick;
            btn.Width = ButtonWidth;
            return btn;
        }
}


Here code for Grid


   private void MasterTableDefinition_PreviewDataRowCreate(object sender, DataRecordCreateEventArgs e)
        {
            try
            {                 
                    e.IsExpandableRecord = true;

                    GridViewTableDefinition detailDefinition = new GridViewTableDefinition();
                    detailDefinition.AutoGenerateFieldDescriptors = false;

                    column = new GridViewDataColumn();
                    column.DataMemberBinding = new Binding("Description");
                    column.HeaderText = "Description";
                    column.IsFilterable = false;
                    column.Width = new GridLength(400);
                    detailDefinition.FieldDescriptors.Add(column);


                    column = new GridViewDataColumn();
                    column.DataMemberBinding = new Binding("LanguageName");
                    column.HeaderText = "Language";
                    column.IsFilterable = false;
                    detailDefinition.FieldDescriptors.Add(column);

                    ButtonDataColumn columnbtn = new ButtonDataColumn("Edit", new RoutedEventHandler(EditDescrButton_Click), 50);
                    columnbtn.DataMemberBinding = new Binding("DescriptionID");
                    columnbtn.IsFilterable = false;
                    columnbtn.Width = new GridLength(55);
                    detailDefinition.FieldDescriptors.Add(columnbtn);          
                    
                    detailDefinition.DataSource = ((HolidayRentalsHome.AdminServices.HolidayRentalsReportList)(e.Data)).HolidayDescriptionsListData;
                    e.ChildTableDefinitions.Add(detailDefinition);
                }     
}

Thanks,

 Sergey
      

[Vlad]

Hello Sergey,

You are right - this is definitely a bug and we have fixed this immediately. You need however to change a bit this column in order to make this to work properly. If you want to use inherited columns in child tables you should:

- add parameterless constructor
- override CopyPropertiesFrom() method and copy any custom properties

I've attached small example using our latest build where the problem is fixed.

Best wishes,
Vlad
the Telerik team

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