How to pass value to ObjectDataProvider.MethodParameters dynamically in runtime

1. Supply some default value to the DataProvider so that it s already set up and bound to your UI.

2. Accept a value from user at runtime and then supply that to the data provider using FindResource call and refresh...

           var myValue = GetFromUser();        ((ObjectDataProvider)this.FindResource("ADUsers")).MethodParameters.Clear();        ((ObjectDataProvider)this.FindResource("ADUsers")).MethodParameters.Add(myValue);        ((ObjectDataProvider )this.FindResource("ADUsers")).Refresh();

Or another tricky way is to OneWayToSource binding with MethodParameters...

    <TextBox x:Name="UserInput">        <TextBox.Text>                 <Binding Source="{StaticResource ADUsers}"                            Path="MethodParameters[0]"                            BindsDirectlyToSource="True"                          Mode="OneWayToSource">                  </Binding>       </TextBox.Text>     </TextBox>

But for this to work your TextBox Text (string) must be matched to the type of the parameter which sadly in our case is integer.In order to fix that create a converter that will take care of this issue.

public class IntToStringConverter : IValueConverter{    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)    {        return value.ToString();    }    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)    {        int intValue = 0;        string strText = value?.ToString();        if (!string.IsNullOrEmpty(strText))        {            intValue = int.Parse(strText);        }        return intValue;    } }