How to Dynamically Create and Manage Arrays in ASP.NET MVC Forms using jQuery?

Use jQuery to dynamically create an array in ASP.NET MVC

In Web development, users usually need to allow users to dynamically add or delete table unit elements, such as text boxes or drop -down lists. This is especially useful when creating a form for complex data structures (such as arrays or lists).

Question

When using ASP.NET MVC with C#, using JavaScript to create a format field field dynamic can bring challenges. By default, the FormCollection parameter binding in MVC only supports only binding to simple types, such as string or numbers. However, it is necessary to bind to the array or list, and a model that indicates a collection is needed.

Solution: Dynamically generate form control

To bind the data of the form group to the model, the Razor syntax must be used to dynamically generate the form control to ensure that they have appropriate names so that the data can be properly binding. This involves items in the use of FOR loop iteration collection, and generates input fields such as "BATCHPRODUCTS [0] .quantity". Update model

After generating the control, the next step is to update the operation method to receive a model that matches the form structure. The parameters need to be updated as a strong type object that represents an array or list, such as "iList

". Dynamically add and delete the project

If you want to enable the user to add or delete the elements in the array, you can use the BeginCollectionITEM auxiliary function or HTML template. BegincollectionITEM auxiliary function allows insert templates at the specific index in the set, which can be used to present new table lines. Similarly, the HTML template provides a method of adding new elements to add new elements using JavaScript.

Example of using BeginCollectionITEM Auxiliary Function

For each element in the set, use BeginCollectionItem Auxiliary function to generate a table line, which contains the input field of each attribute. Contains a hidden input field, which contains element indexes used to delete the purpose.

Example of using HTML templates

Create a template for the lines in the collection and hide it initially. Then, use JavaScript clone and modify the template, update the index value, and add it to the table.

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