Find Column Index by referencing Column Name?

Question

How to get ColumnIndex of a Column by ColumnName from a DataGridView ?

Here's the pseudo-code:

ColumnIndex = ColumnName("SampleName"); 

Answer 1

You can use IndexOf . Like this:

var dataGridViewColumn = dataGridView1.Columns[ColumnName];
if (dataGridViewColumn != null)
{
    int index = dataGridView1.Columns.IndexOf(dataGridViewColumn);
}

Or use Index and Null-conditional operator( ?. ) like this:

var index = dataGridView1.Columns[ColumnName]?.Index;

Answer 2

To get the index of a column

myDGV.Columns.IndexOf(myDGV.Columns["SampleColumn"];

or more simply like you said

myDGV.Columns["SampleColumn"].Index;

Answer 3

The simplest way to do that:

myData.Columns.IndexOf(/*DataGridViewColumn*/)
myData.Columns[/*ColumnName*/].Index

Or:

private void dataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
    int ColumnIndex= dataGridView.CurrentCell.ColumnIndex;       
}