private void button2_Click(object sender, EventArgs e)
{
var results = (
from dataRow in DataGridView1
.GetRowsChecked(checkBoxColumnName)
.GroupBy((item) => 3 > 0)
.Select(
groupRow => new Item
{
Value1Sum = groupRow.Sum((row) =>
row.Field <int>("Value1")),
Value2Sum = groupRow.Sum((row) =>
row.Field <int>("Value2"))
}
)
select dataRow)
.FirstOrDefault();
if (results != null)
{
Console.WriteLine("Value1: {0} Value2: {1}", results.Value1Sum, results.Value2Sum);
}
else
{
Console.WriteLine("Nothing checked");
}
}
private void button1_Click(object sender, EventArgs e)
{
List <DataRow> checkedRows = DataGridView1.GetRowsChecked(checkBoxColumnName);
if (checkedRows.Count > 0)
{
int Value1Sum = checkedRows.Select((row) =>
row.Field <int>("Value1")).Sum();
int Value2Sum = checkedRows.Select((row) =>
row.Field <int>("Value2")).Sum();
Console.WriteLine("Value1: {0} Value2: {1}", Value1Sum, Value2Sum);
}
else
{
Console.WriteLine("Nothing checked");
}
}
