Intersoft Community - ClientUI - UXTextBox not clearing out

UXTextBox not clearing out

yudi — Tue, 08 Oct 2013 02:19:45 GMT

UXTextBox is a fundamental input control generally used to obtain input data from users through input devices such as keyboard. Similar to native text box control (assume that the Text property is bound to a property in View Model – let’s name it as BarCode property), the set accessor of the property will be invoked when user tabs out of UXTextBox or press Enter key.

This default behavior matches with your requirement, to update the list when the user tabs off the textbox (and/or when 4 characters have been entered). Please try to use following snippet code in your View Model.

public string BarCode
{
    get { return _barCode; }
    set
    {
        if (_barCode != value)
        {
            _barCode = value;
            OnPropertyChanged("BarCode");
            if (!string.IsNullOrEmpty(value))
                AddBarCode();
        }
    }
}
private void AddBarCode()
{
    if (!string.IsNullOrEmpty(BarCode) && BarCode.Length == 4)
    {
        ContactsData.Add(new Contact { Id = BarCode.GetHashCode().ToString(), Name = BarCode });
        SetFocusBarcode();
    }
    else
        MessageBox.Show("Please enter valid BarCode character (4 characters)");
    Utility.ExecuteTimeOut(0.1, () =>
    {
        this.BarCode = string.Empty;
    });
}
private void SetFocusBarcode()
{
    ISFocusManager.SetFocus("EnterBarCode");
}

This should help.

UXTextBox not clearing out

zen8019 — Fri, 04 Oct 2013 05:12:11 GMT

Hi Thanks for the reply. I had a look at the sample - it works as you describe, however I need it to work slightly different. I can't have the user click a button to add to list - I need the control to update the list when the user tabs off the textbox (and/or when 4 characters have been entered). The business requirement is for the user 1) to use a bar code scanner to scan a barcode 2) After the barcode scanned - do something (e.g. add to listbox) 3) Clear out the text field and set focus ready for the next barcode to be scanned This is rapid data entry and so button clicks do not fit the requirement. I await you reply...thanks

UXTextBox not clearing out

yudi — Fri, 04 Oct 2013 04:34:20 GMT

I created a simple Silverlight project based on the provided description and snippet code. However, I was unable to reproduce the reported problem in my local end (as shown in the attached video). It adds to the list box and clear out the UXTextBox.

Please have the attached SL project evaluated on your end and let us hear your feedback.

UXTextBox not clearing out

zen8019 — Tue, 01 Oct 2013 06:38:25 GMT

I am using MVVM. I have uxTextbox and a uxListbox.

Aim...

Users scan into the text box and this value is added to the uxListBox then the cursor returns to the uxtext and clearout the the value ready for the next input.

I am struggling to get this to work (and have tried serveral versions of the code below) - it adds to the list box ok, but does not clear out the uxtext box.

The cursor does remain in the Barcode control but does not clear out.

        public string BarCode
            {
            get
            {
                return _BarCode;
            }
            set
            {
                if (_BarCode != value)
                {
                    _BarCode = value;
                    OnPropertyChanged("BarCode");
                    if (!string.IsNullOrWhiteSpace(_BarCode))
                      AddBarCode(_BarCode);
                }
            }
        }
        private void AddBarCode(string barcode)
        {
            if (!string.IsNullOrWhiteSpace(barcode))
            {
                BarCodeList.Add(barcode);
                BarCode = string.Empty;
                SetFocusBarcode();
               // OnPropertyChanged("BarCodeCount");
            }
        }
        private void SetFocusBarcode()
        {
            ISFocusManager.SetFocus("EnterBarCode");
        }

Thanks