How can I prevent dates being selected which are prior to that in another input?

In a form, I have two DatePicker fields which are From and To. In this case user should not be able to choose a value for To less than what he/she choose for the From field.

I just wanted to know is there any SAPUI5 native way to do this comparison and validate the DatePicker fields? In the image blow, you can see that the From has a greater value than the To, which is wrong! In this case, I need to show the validation error around the fields.

Assume you have the following 2 DatePicker objects in your xml view file:

<m:DatePicker id="__input_validFrom" 
   value="{path: 'ZValidFrom', type : 'sap.ui.model.type.Date'}"
   fieldGroupIds="fieldGroup1" 
   change="handleValidFromChange"/>

<m:DatePicker id="__input_validTo" 
   value="{path: 'ZValidTo', type : 'sap.ui.model.type.Date'}" 
   fieldGroupIds="fieldGroup1" 
   change="handleValidToChange" />

These 2 fields show the date in a suitable format as we set the type to sap.ui.model.type.Date.

Now we have to play with constraints of the sap.ui.model.type.Date in the onChange event handler:

handleValidFromChange: function (oEvent) {
    var oDatePicker = oEvent.getSource(),
        sValue = oDatePicker.getValue(),
        sToDatePicker = "__input_validTo",          
        oToDatePicker = this.byId(sToDatePicker);
    oToDatePicker.getBinding("value").setType(new sap.ui.model.type.Date(null, {
        minimum: new Date(sValue)
    }), "string");
},
handleValidToChange: function (oEvent) {
    var oDatePicker = oEvent.getSource(),
        sValue = oDatePicker.getValue(),
        sFromDatePicker = "__input_validFrom",
        oFromDatePicker = this.byId(sFromDatePicker);
    oFromDatePicker.getBinding("value").setType(new sap.ui.model.type.Date(null, {
        maximum: new Date(sValue)
    }), "string");
}

As soon as user change value in one of fields we change the constraints in the other field.

Notes:

1. Please note that we cannot directly bind the constraints to a model.
2. By applying this solution you need to use validation on date pickers to see some validation state text.