如何从C＃中的datagridview中找出最小和最大日期？

Question

I have DataGridView in which a row conatins dates and I want to find min & max value from that row.

How can i get it?

Answer 1

You could use help of collections:

// select row with index that you want (I used 0 for example)
var row = dataGridView1.Rows[0];
List<DateTime> datesInRow = new List<DateTime>();
foreach (DataGridViewCell cell in row.Cells)
  datesInRow.Add((DateTime)cell.Value);
var maxDate = datesInRow.Max();

Of course, more efficient way would be finding max manually, then you wouldn't need extra collection to do it for you :)

Answer 2

in my estimation, using linq methods. Because short and basic code.

var dateTimes = dataGridView1.Rows.Cast<DataGridViewRow>()
            //.Select(x => (DateTime) x.Cells["ColumnName"].Value); //if column type datetime
            //or    
            .Select(x => Convert.ToDateTime(x.Cells["ColumnName"].Value));

var minValue = dateTimes.Min();
var maxValue = dateTimes.Max();