How to add rows to datagridview winforms? [duplicate]

Answer 1

i found two mistake in your code:

1. dr["Color "] = "blue"; Column Color should without space dr["Color"] = "blue";

2. You forgot to add row to the table

   table.Rows.Add(dr);

you can try this

public DataTable GetResultsTable()
{
    DataTable table = new DataTable();
    table.Columns.Add("Name".ToString());
    table.Columns.Add("Color".ToString());
    DataRow dr = table.NewRow();
    dr["Name"] = "Mike";
    dr["Color"] = "blue";
    table.Rows.Add(dr);
    return table;
}
public void gridview()
{          
    datagridview1.DataSource =  GetResultsTable();
}