[DXCategory("CustomDraw")]
public event EventHandler<TileViewItemCustomDrawEventArgs> CustomDrawTile

<DXCategory("CustomDraw")>
Public Event CustomDrawTile As EventHandler(Of TileViewItemCustomDrawEventArgs)

void tileView1_CustomDrawTile(object sender, TileViewItemCustomDrawEventArgs e) {
    switch (e.DrawingProcess) {
        case TileViewItemCustomDrawProcess.DrawTile:
            if (e.ShouldDrawBackground)
                e.DrawBackground();
            if (e.ShouldDrawContent)
                e.DrawContent();
            if (e.ShouldDrawHoveredOverlay)
                e.DrawHoveredOverlay();
            if (e.ShouldDrawDisabledOverlay)
                e.DrawDisabledOverlay();
            if (e.ShouldDrawBorder)
                e.DrawBorder();
            if (e.ShouldDrawCheckMark)
                e.DrawCheckMark();
            break;
        case TileViewItemCustomDrawProcess.DrawCheckMark:
            e.DefaultDraw();
            break;
        case TileViewItemCustomDrawProcess.DrawSelection:
            e.DefaultDraw();
            break;
    }
    e.Handled = true;
}

Private Sub tileView1_CustomDrawTile(ByVal sender As Object, ByVal e As TileViewItemCustomDrawEventArgs)
    Select Case e.DrawingProcess
        Case TileViewItemCustomDrawProcess.DrawTile
            If e.ShouldDrawBackground Then e.DrawBackground()
            If e.ShouldDrawContent Then e.DrawContent()
            If e.ShouldDrawHoveredOverlay Then e.DrawHoveredOverlay()
            If e.ShouldDrawDisabledOverlay Then e.DrawDisabledOverlay()
            If e.ShouldDrawBorder Then e.DrawBorder()
            If e.ShouldDrawCheckMark Then e.DrawCheckMark()
        Case TileViewItemCustomDrawProcess.DrawCheckMark
            e.DefaultDraw()
        Case TileViewItemCustomDrawProcess.DrawSelection
            e.DefaultDraw()
    End Select

    e.Handled = True
End Sub

DxHtmlPainterContext context = new DxHtmlPainterContext();

tileView1.CustomDrawTile += (s, e) => {
    SampleData obj = tileView1.GetRow(e.RowHandle) as SampleData;
    if (obj.Hidden) {
        if (e.DrawingProcess == TileViewItemCustomDrawProcess.DrawTile) {
            e.DrawBackground();
            e.DrawHtml(htmlTemplate, context, (args) => args.InteractivityKey = obj.ID);
            e.DrawBorder();
            e.Handled = true;
        }
    }
};

<div class="tile">
    <div class="text"><strong>Content of this tile is hidden</strong></div>
    <div class="show-action">Show content</div>
</div>

.tile {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.show-action {
    color: deepskyblue;
    text-decoration: underline;
    cursor: pointer;
}
    .show-action:hover {
        color: lightskyblue;
    }