How to find the row on which a mouse click event occurred in radgridview


If you are able to subscribe to a mouse click event on a radgridView, then your immediate requirement could be to find the row in which the mouse click event occurred. In this post we will see how to achieve this.

How to achieve this?

You can achieve this by querying the source of this event. In our case we will do something like this.

private void GridViewRowMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
  // Either this way

  var senderElement = e.OriginalSource as FrameworkElement;
  var parentRow = senderElement.ParentOfType<GridViewRow>();

  // or this way

  var element = e.Source as FrameworkElement;
  var row = senderElement.ParentOfType<GridViewRow>();           

This approach can be applied to all similar controls say RadGridView, RadTreeView etc. Now when you have found the row which the user has clicked, your immediate requirement could be to find the object associated with the row. Say for example if you have found the row and if you want to assign this to the SelectedItem property, then you cannot assign this, this is because to set a selected item, you need to find the exact object which is bound to the row. If you are trying to find the object in the row then you could achieve this like as shown below.

var tag = row as RadRowItem;
object item = tag.Item;

Parquet file experiments, findings and recommendations

Parquet is a binary file format designed with big data in mind where we must access data frequently and efficiently. The way it stores file on the disk is also different from other file formats. It is a column-based data file. And in reality it uses both row based and column based approach to bring the best of both worlds. The data is encoded on disk which ensures that the size remains small compared to actual data and is then compressed where the file is scanned as whole and cut out redundant parts. The query/read speed is dramatically fast when compared to other file formats. Nested data is handled efficiently which is quite cumbersome in other file format to achieve. Doesn’t require to parse the entire file to find data due to its way of storing data. This makes it efficient in reading data. Works quite efficiently with data processing frameworks. Automatically stores schema information. SQL querying is possible with this file format using Continue reading

Libish Varghese Jacob

Libish Varghese JacobI am currently working as a lead engineer in one of the leading wind turbine manufacturing firm. I have wide range of interests and getting my hands dirty in technology is one among them. I use this platform primarily as my knowledge base. I also use this platform to share my experience and experiments so that it might help someone who is walking the way I already did. The suggestions expressed here are the best to my knowledge at the time of writing and this may not necessarily be the best possible solution. I would pretty much appreciate if you could comment on it to bring into my notice on what could have been done better.