How to set min length for texbox?

I want to set "Min Length" property for My TextBox in C# - WPF. In fact I have a TextBox in my window and I want to limit it to only 10 character. I set max length to 10 but I don't find min length property!


I will suggest you something like this:

On the event Lost Focus, you handle when the user left the TextBox:

XAML:

<TextBox LostFocus="TextBox_LostFocus" />

Later with the Length property you set the minimum of characters that you expect.

C#:

private void TextBox_LostFocus(object sender, RoutedEventArgs e)
{
    if (((TextBox)sender).Text.Length < 5)
    {
        MessageBox.Show("You need to write at least 5 characters");
    }
}

This is how it should look:

HTML attribute: maxlength, The maxlength attribute defines the maximum number of characters (as UTF-16 code units) the user can enter into an <input> or <textarea> . This must be an integer value 0 or higher. If no maxlength is specified, or an invalid value is specified, the input or textarea has no maximum length. If IDtextbox.MaxLength < 8 Then MessageBox.Show "Student ID number must be 8 digits" End If End Sub I have been trying to set up a minimum length allowed in a text box in Microsoft Excel 2010 Visual basic, and i have been using this code but it does not work. Any help


Create one property "MinLength" in your view model.

Attach a lost focus event handler to your textbox and inside it, put the check for minimum number of characters using above declared property. If textbox length is <10, then again set focus in same textbox.

Xaml:

<TextBox LostFocus="UIElement_OnLostFocus"></TextBox>

Code behind:

private void UIElement_OnLostFocus(object sender, RoutedEventArgs e)
    {
        // check condition here
    }

TextBox.MaxLength Property (System.Windows.Controls), Attribute for MAXLENGTH = integer in HTML. Attribute of: How To Use Input To Create Form Fields In HTML: Easy Tutorial; What does What Input Maxlength� How to set the Length of the Characters in TextBox in C#? In Windows forms, TextBox plays an important role. With the help of TextBox, the user can enter data in the application, it can be of a single line or of multiple lines.


Have had the same problem and solved it this way ... Maybe it's not a nice programming style!? :)

int (name) = 0;
(name) = (textbox).TextLength;

if((name) >= (min input you like){
(do something)}

else {ErrorMessage)}

What Input Maxlength Does In HTML: An Easy Tutorial �, The purpose of the HTML maxlength attribute is to specify the maximum number of characters allowed in a text field of a form. Supported elements. Syntax <input maxlength="value" >..</input> Type of value. Value. Default value. Supported doctypes. Example of HTML maxlength attribute with input <! Result. Here Mudassar Ahmed Khan has explained with an example, how to set MaxLength property for TextBoxes created using Html.TextBox and Html.TextBoxFor helper functions in ASP.Net MVC Razor. The MaxLength for TextBoxes is set using the HTML MaxLength attribute using the HtmlAttributes parameter in Html.TextBox and Html.TextBoxFor helper functions. TAGs: ASP.Net, MVC, TextBox


HTML maxlength attribute - HTML tutorials, The MaxLength property will not work when using a "number" input (i.e. type=" number" ). You could consider setting the max and min attributes� You can use this property to restrict the length of text entered in the control for values such as postal codes and telephone numbers. You can also use this property to restrict the length of text entered when the data is to be stored in a database so that the text entered into the control does not exceed the maximum length of the corresponding


How to set limit of max length to TextBox?, To limit the number of characters, use the maxlength attribute. The max and min attributes are used with number, range, date, datetime,� I am trying to make sure that user uses at least 6 characters as a password in my program. I know how to set maximum size by using MaxLength, but how I do this for the minimum length?


How to limit the number of characters allowed in form input text field?, The <input> maxlength attribute is used to specify the maximum number of characters enters into the <input> element. Syntax: <input maxlength="number">. Here Mudassar Ahmed Khan has explained the following three types of character length or count validations for ASP.Net TextBox using Regular Expression Validators. 1. Maximum character length Validation 2. Minimum character length Validation 3. Minimum and Maximum character length Validation TAGs: ASP.Net Validators, Regular Expressions