Hi Andrew,

Please use the following approach:

methods: {
				addToolsButtonMenuItems: function(toolsButtonMenu) {
					this.callParent(arguments);
					toolsButtonMenu.addItem(this.getButtonMenuSeparator());
					toolsButtonMenu.addItem(this.getButtonMenuItem({
						Caption: {"bindTo": "Resources.Strings.CustomButton"},
						Click: {"bindTo": "onButonClick"},
						Visible: {"bindTo": "getCustomButtonVisible"},
					}));
				},
				getCustomButtonVisible: function() {
					return this.isSingleSelected();
				},
				onButonClick: function() {
					console.log("Clicked!");
				}
			},

there is no IsSelectRecord base attribute that will make the button visible or invisible, thus there are basic methods to make "Edit" or "Copy" buttons enabled\disabled so I've used the logic behind them as an example to make the custom button visible.

Oleg Drobina,

Thank you for your guid!. It works for a single detail record selected, like the behavior of "Edit" or "Copy".

What I want is the like the behavior of "Delete", and I found the solution in the academy.

In summary, I just adjusted the code below to approach the behavior like "Delete" action.

getCustomButtonVisible: function() {

    var selectedRows = this.get("SelectedRows");

    return selectedRows ? (selectedRows.length > 0) : false;

},

Thank you!

Hi there, 

It seems that the error may be hidden in this line: 

.Column(Func.Cast("UsrName", DBDataValueType.TextDataValueTypeUId))

Please try to use the code below as an example: 

var textDataValueType = new TextDataValueType(new DataValueTypeManager()) {
   Name = "Text"
};
var SelQuery = new Select(UserConnection)
   .Column(Func.Cast("Name", textDataValueType)).As("Name")
   .From("Contact") as Select;
var SelRecord = SelQuery.ExecuteScalar<string>();

Regards,

Anastasiia

Anastasiia Markina,

Thanks for code, Now its working.