C# datagridview column into an array

Question

I am building a program with c#, and have included a datagridview component into it. The datagridview has a fixed amount of columns (2), which I want to save into two separate arrays. The amount of rows does change though. How could I do this?

Answer 1

Assuming a DataGridView named dataGridView1 and you want to copy the contents of the first two columns into Arrays of strings, you can do something like this:

string[] column0Array = new string[dataGridView1.Rows.Count];
string[] column1Array = new string[dataGridView1.Rows.Count];

int i = 0;
foreach (DataGridViewRow row in dataGridView1.Rows) {
    column0Array[i] = row.Cells[0].Value != null ? row.Cells[0].Value.ToString() : string.Empty;
    column1Array[i] = row.Cells[1].Value != null ? row.Cells[1].Value.ToString() : string.Empty;
    i++;
}

Answer 2

Try this:

ArrayList col1Items = new ArrayList();
ArrayList col2Items = new ArrayList();

foreach(DataGridViewRow dr in dgv_Data.Rows)
{
  col1Items.Add(dr.Cells[0].Value);
  col2Items.Add(dr.Cells[1].Value);
}