Data Validations in WPF

Snapshot of WPF Data Validations.

Snapshot of invalid inputs:

Snapshot of output for correct details (valid input):

XAML code for NAME field

<TextBox.Text>

</TextBox.Text>

</TextBox>

CS code for Name

get

{

string result = null;

if (cuurectname == "Name")

{

if (string.IsNullOrEmpty(Name))

{

result = "Name Cannot be Empty.";

return result;

}

String st = @"!|@|#|\$|%|\?|\>|\<|\*";

if (Regex.IsMatch(Name,st))

{

result = "Spesial charectors are not allowed";

return result;

}

}

Input

XYZ valid
Xyz valid
X@yz invalid

XAML code for CODE

<TextBox.Text>

</TextBox.Text>

</TextBox>

CS code for CODE

if (cuurectname == "Code")

{

if (string.IsNullOrEmpty(Code))

{

result = "Code Cannot be Empty.";

return result;

}

Input

The code field accepts integer, string, special chars and so on.

123 : valid
Abc : valid
Qwe#asd : valid
Invalid : Empty string

CS code for AGE

if (cuurectname == "Age")

{

if (Age < 1 || Age > 70)

{

result = "Enter Age between 1 and 70.";

return result;

}

XAML code

<TextBox.Text>

</TextBox.Text>

</TextBox>

Inputs

Range 1 - 70
-12 : invalid
25 : valid
69 : valid
71 : invalid

Enter all the valid details in respective fields. Then click "ADD". The data will be saved in the database.

CS CODE

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ComponentModel;

using System.Text.RegularExpressions;

namespace DATA_Validation

{

public class student : IDataErrorInfo

{

public int id { get; set; }

public string Name { get; set; }

public string Code { get; set; }

public int Age { get; set; }

public string City { get; set; }

public DateTime? DateofBirth { get; set; }

public string Email { get; set; }

public string Error

{

get

{

return this[string.Empty];

}

public string this[string cuurectname]

{

get

{

string result = null;

if (cuurectname == "Name")

{

if (string.IsNullOrEmpty(Name))

{

result = "Name Cannot be Empty.";

return result;

}

String st = @"!|@|#|\$|%|\?|\>|\<|\*";

if (Regex.IsMatch(Name, st))

{

result = "Spesial charectors are not allowed";

return result;

}

if (cuurectname == "Code")

{

if (string.IsNullOrEmpty(Code))

{

result = "Code Cannot be Empty.";

return result;

}

if (cuurectname == "Age")

{

if (Age < 1 || Age > 70)

{

result = "Enter Age between 1 and 70.";

return result;

}

if (cuurectname == "City")

{

if (string.IsNullOrEmpty(City))

{

result = "City Cannot be Empty.";

return result;

}

if (cuurectname == "DateofBirth")

{

if (DateofBirth < DateTime.Parse("01-01-1987") || DateofBirth > DateTime.Now)

{

result = "DateofBirth between from 01-01-1987 to till date";

return result;

}

if (cuurectname == "Email")

{

string s1 = @"^([\w]+\.+[\w]+@[\w]+\.[a-zA-Z]{3})$";

string s2 = @"^[\w]+@+[\w]+\.[a-zA-Z]{3}$";

if (Email == null)

{

result = "Email cannot be empty";

return result;

}

if (Regex.IsMatch(Email, s1) || Regex.IsMatch(Email, s2))

{

return null;

}

else

{

result = "Not a valid email(Format:[email protected])";

return result;

}

return null;

}

XAML CODE:

<window x:class="DATA_Validation.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" title="MainWindow" height="500"

width="525">

<Window.Resources>

</TextBlock>

</Border>

</DockPanel>

</ControlTemplate>

</Window.Resources>

<Grid>

<TextBox.Text>

</TextBox.Text>

</TextBox>

<TextBox.Text>

</TextBox.Text>

</TextBox>

<TextBox.Text>

</TextBox.Text>

</TextBox>

<TextBox.Text>

</TextBox.Text>

</TextBox>

<DatePicker.DisplayDate>

</DatePicker.DisplayDate>

</DatePicker>

<TextBox.Text>

</TextBox.Text>

</TextBox>

</Grid>

</window>

Data Validations in WPF

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