how use a foreach to set MaskedTextBox'ValidatingType to typeof(DateTime)

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hi

i want use foreach to set MaskedTextBox'ValidatingType to typeof(DateTime)

C#

foreach(Control item in this.Controls)
        {
            foreach (Control co in item.Controls)
            {
                if(co is MaskedTextBox)
                {
                    MaskedTextBox mtb = (MaskedTextBox)co;
                    mtb.ValidatingType = typeof(DateTime);
                }
            }
            if (item is MaskedTextBox)
            {
                MaskedTextBox mtb1 = (MaskedTextBox)item;
                mtb1.ValidatingType = typeof(DateTime);
            }
        }

Posted 19-Nov-14 7:56am

NorouziFar

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BillWoodruff 19-Nov-14 14:05pm

And, what is the problem you have now with this code ? If it not working, tell us what's happening when you run it: what are any message errors, where do errors occur.

I don't see any implementation of 'TypeValidationCompleted EventHandlers; I don't see any value assigned for the 'Mask Property of the MaskedTextBoxes.

Sergey Alexandrovich Kryukov 19-Nov-14 14:06pm

First of all, note one of the purposes of the masked text box is to avoid validation, or at least avoid excessive validation...
—SA

BillWoodruff 19-Nov-14 14:28pm

There are issues specific to using MaskedTextBox where you want DateTime entry which do require special handling beyond just setting the 'ValidatingType property to typeof(DateTime). We don't see any evidence ... yet ... the OP has started addressing the requirements of that special handling, but let's give them a chance to respond.

Sergey Alexandrovich Kryukov 19-Nov-14 15:35pm

Well, sure...
—SA

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BillWoodruff · Accepted Answer · 2014-11-19T09:20:00

I'm about to call it a night here (03:00 at GMT+7), but I'd like to help you get started on this while it's fresh in mind. Please respond to the issues raised in my comment on your question.

First, if you really need to locate every MaskedTextBox in your Form, or other Container of Controls, no matter how deeply nested the level of encapsulation may be, you need to use recursion.

Here's one example of many ways you could do this; for simplicity, I won't use Linq here, and I'll use standard-flavor recursion rather than use a Stack:

C#

private readonly Type dateTimeType = typeof(DateTime);

private List<MaskedTextbox> allMaskedTextBoxes = new List<MaskedTextbox>(); 

private void SetMaskTBValType(Control.ControlCollection cCollection)
{
    foreach (Control c in cCollection)
    {
        if (c is MaskedTextBox)
        {
            var toMaskType = c as MaskedTextBox;

            toMaskType.ValidatingType = dateTimeType;

            // implement the other things you will need here !
        }
        else
        {
            if (c.HasChildren)
            {
                SetMaskTBValType(c.Controls);
            }
        }
    }
}

// and here's how you would call it to set the 
// ValidationType for every MaskedTextBox on the Form
private void YourForm_Load(object sender, EventArgs e)
{
    SetMaskTBValType(this.Controls);

    // verify
    bool test = maskedTextBox1.ValidatingType == dateTimeType;
}