Dynamically populate lists by information from other conditions — WebForms

A code snippet which demonstrates how to execute this task

Getting Started

Dynamically populate value lists by information from other conditions

Suppose we have a database with Customer entity which has Country and City attributes. For both these attributes we define the value editors which return the lists of available values (countries and cities correspondingly). Now let's imagine the user adds a condition with the Country attribute e.g. Hera the steps needed to implement such a functionality: Define a value editor for the City attribute as SQL LIST with Cities.@{{Customer.Country}} list name (here Customer.Country is the ID of the Country attribute in the Customer entity). Let's name it "CitesSqlValueList") and then in a value list resolver modify its SQL according the currently selected country and get the list of values using GetValueListAsync method of EasyQueryManager class: What's happening here.

Dynamic populating of value lists in WinForms or WPF editions

Example of how to solve this problem

Getting started for ASP.NET WebForms

Here you can find the instructions how to add EasyQuery components into your ASP.NET WebForms project

Dynamic PHP query builder with EasyQuery

Dynamic PHP query builder with EasyQuery

JavaScript widgets formats and settings (Webforms)

How to set up column formats and change default settings of the table.

Getting started for WPF

You will be able to apply EasyQuery WPF to your application, performing all the instructions in this article

Getting started for Silverlight

This article will guide you through all steps necessary to apply EasyQuery.NET to your application, with extract examples

Getting started for WPF

Getting started tutorial on how to use EasyQuery components to implement an ad-hoc query builder in WPF application.

Building data model dynamically by DB meta-information

It's easier to fill your model right in the code directly from your database, using meta-information

Building data model dynamically by information from a DataTable

Example of how to build data model by certain information from DataTable

Getting started for Windows Forms

This article shows how to apply EasyQuery.NET to your application

Creating data model dynamically with code

-Data Model- object is an essential part of EasyQuery framework. However, sometimes you need to add some entities, entity attributes or operators to the existing model or to fill it from scratch using DB metadata information got from another source. In these cases, you can use EasyQuery API to build the model dynamically. Finally, we add entities and entity attributes. Here is an example of creatin a small data model: two tables (Customers and Orders) with one link between them, 2 entities (Customer and Order correpondingly) and a few attributes in each entity.

Getting started for ASP.NET 4

Describes the steps you need to perform for applying EasyQuery ASP.NET to your MVC or WebForms project

Building dynamic queries with EasyQuery and Entity Framework

Here we describe how EasyQuery helps to implement a query building UI for creating custom, dynamic queries in .NET projects which use Entity Framework (6.x)

ASP.NET Core tutorials

This section contains all getting started articles for the version 5.x branch of EasyQuery for .NET Core. Please note if you have a project for .NET Framework (version 4.x or earlier) - please look at the articles in [$$-Version 3.x-$$](/$aid/eqdn-6f1z3hf0ml4u) section.

Getting started for Windows Forms

Here we will describe how to add the UI for advanced search and data filtration in your Windows Forms application.

Gridview filtering with EasyQuery ASP.NET (WebForms)

Gridview filtering with EasyQuery ASP.NET (WebForms)

Upgrading to 5.x: ASP.NET (MVC and WebForms) projects

This tutorial describes how to upgrde your old ASP.NET MVC project with EasyQuery 3.x to EasyQuery version 5.2.0 (or higher). 1.2 Use NuGet Package Manager to install the following packages: Korzh.EasyQuery.AspNet4 Korzh.EasyQuery.EntityFramewok6 - if you are using Entity Framework 6.x Korzh.EasyQuery.DataExport - if you will need the data exporting functions Korzh.EasyQuery.MsSqlGate (or .MySqlGate or .OdbcGate depending on your DB) - if you need to load your model directly from DB connection. Finally, we need to make some modifications on our pages where we use EasyQuery scripts. Version 5.2.0 and higher of EasyQuery scripts will not need JQuery anymore, so you will be able to throw them away if they are not used in your own pages. Here is an example for "advanced search" view: To update your Web Forms page your will need to do the following 3 steps: Add EasyQuery scripts and styles on your page.