How to Check if the WinForms Diagram is empty?

In our WinForms Diagram control, you can check if the diagram is empty by evaluating the count of the nodes. If the Node count is zero, the diagram area has no elements. If the count is greater than zero, elements are present in the diagram. We have provided a code example to demonstrate how to achieve this.

Code Snippet:

private void button2_Click(object sender, EventArgs e)
{
   int NodesCount = diagram1.Model.Nodes.Count;

   if(NodesCount == 0)
   {
       MessageBox.Show("Diagram is empty");
   }
   else
   {
       MessageBox.Show("Diagram is not empty");
   }
} 

Conclusion:

I hope you enjoyed learning about how to check if the WinForms Diagram is empty.

You can refer to our WinForms Diagram feature tour page to learn about its other groundbreaking feature representations and documentation. You can also explore our WinForms Diagram example to understand how to create and manipulate data.

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