How Can I Customize Date and Time Formatting in a DataGridView?

Override date and time format in DataGridView

Question:

When retrieving and displaying a DateTime column in a DataGridView, the format may not match the desired display format. This is usually due to the system's default formatting settings.

Solution:

To override the default formatting and specify a custom date and time format:

1. Get DataGridView columns:

DataGridViewColumn column = dataGridView.Columns["LastAction"];

2. Set the DefaultCellStyle.Format property:

column.DefaultCellStyle.Format = "MM/dd/yyyy HH:mm:ss";

This will format the value of the column in the specified format (for example, dd/MM/yyyy hh:mm:ss).

3. Optional: Set the DateTimePickerFormat property:

column.DateTimePickerFormat = CustomConstants.DateTimePickerFormats.ShortDateTime;

This property can further optimize the format used by the DateTimePicker within the cell.

Additional information:

• To set a custom AM/PM format, use: "MM/dd/yyyy hh:mm:ss tt"
• Supported format codes can be found in the following documentation:

https://www.php.cn/link/cca437dfff11995edc035566eabec9a7

Example:

private void SetColumnFormat(DataGridView column)
{
    column.DefaultCellStyle.Format = "MM/dd/yyyy hh:mm:ss tt";
    column.DateTimePickerFormat = CustomConstants.DateTimePickerFormats.ShortDateTime;
}

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