Change Column name(s) in DataGridView

Question

I use the following code 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

Is there any type of error you are facing?? In your code you are not changing the column name anywhere instead you are assigning the column name to string variable `str` ? — Mr_Green, Nov 15 '12 at 10:20
Possible duplicate of [Changing the column name in GridView using HTML or C#](https://stackoverflow.com/questions/7703548/changing-the-column-name-in-gridview-using-html-or-c-sharp) — mherzl, Aug 06 '19 at 15:23

score 16 · Accepted Answer · answered Nov 15 '12 at 10:24

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";
   }
}

score 7 · Answer 2 · answered Sep 06 '14 at 14:40

7

Add this line to Datagridview DataBindingComplete event handler

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

answered Sep 06 '14 at 14:40

rafalefighter

714
2
11
39

score 2 · Answer 3 · answered Nov 15 '12 at 10:43

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());
        }

Thank you so much. i can't vote it up. because i have under 15 reputation. thankssss — , Nov 15 '12 at 11:04

Change Column name(s) in DataGridView

3 Answers3