更改datagridview中的列名称

Question

I use these following codes to change the column name but unfortunately it won't let me do that. Please help me to solve this problem.

DateTime dt = DateTime.Now;
string s = dt.DayOfWeek.ToString();
for (int i = 0; i < 10; i++)
{
    dataGridView1.Columns.Add(string.Format("col{0}", i), s);
}
for (int i = 0; i < dataGridView1.Columns.Count; i++)
{
    int c = dataGridView1.CurrentCell.ColumnIndex;
    string str = dataGridView1.Columns[c].HeaderText;
    if (str == "Wednesday")
    {
        str = "fifth day of week";
    }
}

Also is there any way so that I can get all day of week after each other between specific datetimes.

Any help will be appreciated

Answer 1

You need to set DataGridView.Column[index].HeaderText:

DateTime dt = DateTime.Now;

string s = dt.DayOfWeek.ToString();
for (int i = 0; i < 10; i++)
{
    dataGridView1.Columns.Add(string.Format("col{0}", i), s);
}

for (int i = 0; i < dataGridView1.Columns.Count; i++)
{

   string str = dataGridView1.Columns[i].HeaderText;
   if (str == "Wednesday")
   {
       dataGridView1.Columns[i].HeaderText = "fifth day of week";
   }
}

Answer 2

将此行添加到Datagridview DataBindingComplete事件处理程序

 this.dataGridView1.Columns["your database column name"].HeaderText = " preferred name";

Answer 3

The below code will get all days of week after each other between specific datetimes and print the names of the days as column headers:

        DateTime dtStart = new DateTime(2012, 11, 1);
        DateTime dtEnd = new DateTime(2012, 11, 7);

        for (int i = 0; i < dtEnd.Subtract(dtStart).Days; i++)
        {
            TimeSpan counter = new TimeSpan(i, 0, 0, 0);

            dataGridView1.Columns.Add(string.Format("col{0}", i), (dtStart + counter).DayOfWeek.ToString());
        }