How do I pass multiple datagridview rows to another datagridview

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I'm trying to pass datagridview multiple rows from one form to another datagridview. Its working fine for current row but generates an error for multiple rows. I.e not all paths return a value.

What I have tried:

get
{
foreach (DatagridviewRow r in dgv.Rows)
{return row.cells[2].value. ToString();}
}
set
{
.............
}

Posted 27-Jan-19 10:15am

Robert S4r

Updated 27-Jan-19 18:51pm

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Bryian Tan 27-Jan-19 16:51pm

Have you try modify it to return List / array of string instead of a string?

Robert S4r 27-Jan-19 17:41pm

Not yet. No idea on how to go about it.

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OriginalGriff · Answer 1 · 2019-01-27T10:56:00

You can't return multiple values from a property unless you return a collection - adding return in a loop will terminate the loop a return a single value^*. So the compiler throws an error because if there are no items in the DGV then there is no way to reach a return statement and the property can't compile.

* Well, probably there is - using yield return but I've never tried that in a property, and it's going to be complicated to arrange.

Maciej Los · Answer 2 · 2019-01-27T18:52:00

If datagridview datasource is a datatable...

C#

//get a datasource
DataTable dt = (DataTable)DataGridView1.DataSource;
//filter data
DataGridView2.DataSource = dt.Filter("Field=whatever");
//or 
DataGridView2.DataSource = dt.AsEnumerable().Select(x=>x.Field<DataTypeOfField>("FieldName")).CopyToDataTable();

How do I pass multiple datagridview rows to another datagridview

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