Here Mudassar Ahmed Khan has explained with an example, how to show and hide TextBox on Button Click using JavaScript and jQuery.

When the Yes Button is clicked, the TextBox will be shown and when the No Button is clicked the TextBox will be hidden.

Here Mudassar Ahmed Khan has explained with an example, how to bind (populate) ComboBox using Entity Framework in Windows Forms (WinForms) Application using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to pass (send) JSON object values from Controller to View in ASP.Net MVC Razor.

In order to return JSON object values, the JsonResult return type is used for the Action method inside Controller in ASP.Net MVC Razor.

Here Mudassar Ahmed Khan has explained with an example, how to implement Entity Framework Database First Approach in Windows Forms (WinForms) Application using C# and VB.Net.

This article will illustrate how to use Entity Framework Database First Approach to populate DataGridView in Windows Forms (WinForms) Application using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to export to CSV file in ASP.Net MVC Razor.

When the Export Button is clicked, the data from Database is fetched using Entity Framework and a Comma Separated (Delimited) string is generated which is exported and downloaded as CSV file in ASP.Net MVC Razor.

Here Mudassar Ahmed Khan has explained with an example, how to convert List of Objects to CSV file using C# in ASP.Net MVC Razor.

When the Export Button is clicked, the data from Database is fetched using Entity Framework as List of Objects.

Then using a FOR Loop, the data is converted into a Comma Separated (Delimited) string which is later exported and downloaded as CSV file in ASP.Net MVC Razor.

Here Mudassar Ahmed Khan has explained with an example, how to export Entity Framework data to CSV file in ASP.Net MVC Razor.

When the Export Button is clicked, the data from Database is fetched using Entity Framework and a Comma Separated (Delimited) string is generated which is exported and downloaded as CSV file in ASP.Net MVC Razor.

Here Mudassar Ahmed Khan has explained with an example, how to export WebGrid to CSV file with formatting in ASP.Net MVC Razor.

First the WebGrid will be populated from database using Entity Framework and when the Export Button is clicked, a Comma Separated (Delimited) string will be generated from WebGrid data and ultimately it will be exported to CSV file in ASP.Net MVC Razor.

Here Mudassar Ahmed Khan has explained with an example, how to show and hide TextBox based on DropDownList selection in ASP.Net using C# and VB.Net.

When the YES item (option) is selected in the DropDownList, TextBox will be visible else the TextBox will be hidden in ASP.Net using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to enable (activate) a TextBox when Other option is selected in DropDownList (HTML SELECT) using JavaScript and jQuery.

Here Mudassar Ahmed Khan has explained with an example, how to enable and disable a TextBox when DropDownList (HTML SELECT) is changed i.e. when an item (option) is selected using JavaScript and jQuery.

When the Other (option) in DropDownList is selected, the TextBox will be enabled else disabled.

Here Mudassar Ahmed Khan has explained with an example, how to enable and disable a TextBox when RadioButton is clicked i.e. checked (selected) and unchecked (deselected) using JavaScript and jQuery.

When the RadioButton is clicked based on whether the YES RadioButton is checked (selected) or unchecked (deselected), the TextBox will be enabled or disabled.

Here Mudassar Ahmed Khan has explained with an example, how to disable Submit Button when INPUT Text Field (TextBox) is empty in AngularJS.

When using AngularJS Form validation, the $invalid property can be used to disable the Submit Button when Form is not filled (empty) i.e. the INPUT Text Fields (TextBoxes) have invalid data.

Here Mudassar Ahmed Khan has explained with an example, how to perform Form validation in AngularJS.

This article will illustrate how to perform Form Validation for TextBox INPUTS for validating Name, Email Address and Age, etc. on click of Submit Button in AngularJS.

Here Mudassar Ahmed Khan has explained with an example, how to perform Email Address validation inside Controller in AngularJS.

This article will illustrate how to use AngularJS Form Validation for TextBox and ng-pattern directive and Regular Expressions (Regex) for validating Email Address in AngularJS.

The Regular Expression for Email validation will be set inside Controller in AngularJS.

Here Mudassar Ahmed Khan has explained with an example, how to perform Email Address validation in AngularJS.

This article will illustrate how to use AngularJS Form Validation for TextBox and ng-pattern directive and Regular Expressions (Regex) for validating Email Address in AngularJS.

Here Mudassar Ahmed Khan has explained with an example, how to check whether CheckBox in GridView is checked or not in ASP.Net using C# and VB.Net.

When the Button is clicked, a loop will be executed over GridView Rows and then it will be determined whether the CheckBox inside the GridView Row is checked or not in ASP.Net.

Here Mudassar Ahmed Khan has explained with an example, how to validate CheckBoxes inside GridView and perform at least one CheckBox checked validation using ASP.Net CustomValidator and JavaScript in ASP.Net.

When the Button is clicked, the ASP.Net CustomValidator triggers the JavaScript function and using a FOR loop, the GridView CheckBoxes are traversed and a validation to make sure whether at least one CheckBox is checked is performed.

Validation of CheckBoxes inside GridView is performed using ASP.Net CustomValidator with a client side JavaScript validation function.

Here Mudassar Ahmed Khan has explained with an example, how to implement at-least one CheckBox required validation in AngularJS.

When the Submit Button is clicked, the Model for each CheckBox in the Group will be referenced and using FOR loop, it will be validated that at-least one CheckBox is required to be checked from the Group of CheckBoxes using AngularJS.

Here Mudassar Ahmed Khan has explained a simple tutorial with an example, how to use the ng-pattern directive in AngularJS.

The ng-pattern directive is used to validate the user input for the invalid characters with the help of Regular Expression patterns in AngularJS.

Here Mudassar Ahmed Khan has explained with an example, how to validate Group of RadioButtons (Multiple RadioButtons) using AngularJS.

When the Submit Button is clicked, the Model for each RadioButton in the Group will be referenced and using FOR loop, it will be validated that one RadioButton is checked from the Group of RadioButtons using AngularJS.

Here Mudassar Ahmed Khan has explained with an example, how to validate Group of RadioButtons (Multiple RadioButtons) using jQuery.

When the Submit Button is clicked, all the RadioButtons in the Group will be referenced and using FOR loop, it will be validated that one RadioButton is checked from the Group of RadioButtons using jQuery.

Here Mudassar Ahmed Khan has explained with an example, how to validate Group of RadioButtons (Multiple RadioButtons) using JavaScript.

When the Submit Button is clicked, all the RadioButtons in the Group will be referenced and using FOR loop, it will be validated that one RadioButton must be checked from the Group of RadioButtons using JavaScript.

Here Mudassar Ahmed Khan has explained with an example, how to validate Group of CheckBoxes (Multiple CheckBoxes) using AngularJS.

When the Submit Button is clicked, the Model for each CheckBox in the Group will be referenced and using FOR loop, it will be validated that at-least one CheckBox is checked from the Group of CheckBoxes using AngularJS.