C# how to change data in DataTable?

Question

I\'v got some problem, I use DataTable to store my data in dataGridView. Data was inputed like this:

dt = new DataTable();
dt.Columns.Add(\"ID\", typeof(int)         


        

Answer 1

Try the SetField method:

table.Rows[i].SetField(column, value);
table.Rows[i].SetField(columnIndex, value);
table.Rows[i].SetField(columnName, value);

This should get the job done and is a bit "cleaner" than using Rows[i][j].

Answer 2

dt.Rows[1].ItemArray gives you a copy of item arrays. When you modify it, you're not modifying the original.

You can simply do this:

dt.Rows[1][3] = "Value";

ItemArray property is used when you want to modify all row values.

ex.:

dt.Rows[1].ItemArray = newItemArray;

Answer 3

You should probably set the property dt.Columns["columnName"].ReadOnly = false; before.