Question

If the entry in my SQL table is 09:00:00 my cells either show up as something like 09:00:00 or if i throw in a string format like this:

    <DataGridTextColumn Binding="{Binding Path=tin, StringFormat=\{0:hh\\:mm\}}"  Header="Time In:"/>

I get 9:00. How do i make it formatted for a short time string like “09:00 AM”?

I have tried using StringFormat=t and it makes the cell blank. Any use of “t” and the cell goes blank. I am really in a pickle here.

The DataGrid is populated with a dataset named displayGrid. entryGrid is the DataGrid object.
entryGrid.ItemsSource = displayGrid.Tables[0].DefaultView;

What I am looking for here is what to throw in the XAML to format this correctly. I need to go from 09:00:00 in my SQL 2008 Table to 09:00 AM in my datagrid. I am using C#.Net and XAML in VS 2012. I am super new to coding so I am sure it is a simple mistake or syntax error. Thank you for any help you can give.

EDIT:

I have even gone back, tried autogenerating the columns with the following code to format the cell:

 private void ResultsDataGrid_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
    {
        if (e.PropertyType == typeof(DateTime))
        {
            DataGridTextColumn dataGridTextColumn = e.Column as DataGridTextColumn;
            if (dataGridTextColumn.Header.ToString().Equals("wkdate"))
            {
                dataGridTextColumn.Binding.StringFormat = "{0:d}";
            }
            if(dataGridTextColumn.Header.ToString().Equals("tin"))
            {
                dataGridTextColumn.Binding.StringFormat = "{0:t}";

            }
        }
    }

works for the date but not the time! This is driving me bonkers. Thanks in advance!

Answer 1

As per your format, you could update your existing XAML Code and write as below:

<DataGridTextColumn Binding="{Binding Path=tin, StringFormat=\{0:hh:mm tt\}}"  Header="Time In:"/>

Hope this helps

Alternatively, Could you could you the below. I am sure this is working as i have used it in many project.

CS File Code:

 [ValueConversion(typeof(DateTime), typeof(string))]
    public class StringTime : IValueConverter
    {
        #region IValueConverter Members
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value == null || value.ToString() == "")
            {
                return "";
            }
            String str = ((DateTime)value).ToString("hh:mm tt");
            return str;
        }
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (value == null || value.ToString() == "")
            {
                return value;
            }
            DateTime dtr = DateTime.MinValue.Date;
            dtr = dtr.AddYears(1899);
            if (value == null)
                return dtr;
            dtr = dtr.AddHours(double.Parse((value.ToString().Substring(0, 2))));
            dtr = dtr.AddMinutes(double.Parse((value.ToString().Substring(3, 2))));
            if(value.ToString().Substring(7, 2) == "PM")
                dtr = dtr.AddHours(12);

            return dtr;
        }
        #endregion
    }

XAML File:

    <Page.Resources>
        <custom:StringTime x:Key="StringTime" />
    </Page.Resources>

DataGrid Column Code:

    <DataGridTextColumn Binding="{Binding Path=tin, Converter={StaticResource StringTime}}"  Header="Time In:"/>

Let me know if you have any issues.