How to Customize Date and Time Formatting in a DataGridView?

Customize date and time format in DataGridView

When using DataGridView, you often encounter situations where you need to control the format of date and time columns to meet specific display needs. This article describes how to override the system-based default format and display a custom date and time format in a DataGridView.

Question:

In a DataGridView that displays log entities, the "Last Action" column represents the timestamp of the last log message. Its format is formatted according to the system's settings and is only displayed to the minute. The goal is to override this format and display the date and time in a custom format such as "dd/MM/yyyy hh:mm".

Solution:

To customize the format of columns in the DataGridView, follow these steps:

1. Determine which DataGridView columns to format.
2. Access the DefaultCellStyle property of the column.
3. Set the Format property of the DefaultCellStyle object to the desired format string.

For example, to display the "Last Action" column in "dd/MM/yyyy hh:mm" format, use the following code:

<code>dataGrid.Columns[2].DefaultCellStyle.Format = "dd/MM/yyyy hh:mm";</code>

Other formatting options:

In addition to standard date and time formats, DataGridView supports custom format specifiers for finer control of display. For example, to display the time in AM/PM format, use the following format string:

<code>dataGrid.Columns[2].DefaultCellStyle.Format = "MM/dd/yyyy hh:mm:ss tt";</code>

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