如何使用数据库中的数据手动将列标题设置为datagridview

Question

hope you can help me with this. Currently, I am working on a dynamic payroll system for our thesis which main function is to create multiple payroll format for different company. I can create simple datagridview which shows basic employee information such as Employee's "Full name" and "initial rate" but is it possible to add new header/s using a button function(not hardcoded) which will hold a value just in case the user would like to add deductibles

Answer 1

You are not specified platform.

In case of WinForms :

1. Add unbound column by click or whatever:

     var column = new DataGridViewColumn(new DataGridViewTextBoxCell()); column.Name = "Calculated Column"; column.HeaderText = "Calculated Column"; dataGridView1.Columns.Add(column); 

2. Add processing of datagridview.cellformatting

    private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e) { if (dataGridView1.Columns[e.ColumnIndex].Name == "Calculated Column") { var data = (DataObj)dataGridView1.Rows[e.RowIndex].DataBoundItem; e.Value = GetCalculatedColumnValue(data); e.FormattingApplied = false; } } 

3. Add processing of entered data in column

    private void dataGridView1_CellParsing(object sender, DataGridViewCellParsingEventArgs e) { if (dataGridView1.Columns[e.ColumnIndex].Name == "Calculated Column") { var data = (DataObj)dataGridView1.Rows[e.RowIndex].DataBoundItem; SetCalculatedColumnValue(data, e.Value); } } 

PS I my case I use DataObj as data bounded object

public class DataObj
{
    public float Price { get; set; }
    public int Amount { get; set; }
}

In case you need only to show external data (read only column) (p3 is not needed)