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Data Binding in Blazor Query Builder component

The Query Builder uses DataManager to bind the dataSource which supports both RESTful JSON data services binding and local object binding. The DataSource property can be assigned either with the instance of DataManager or data type of array.

To bind data to the Query Builder Component, you can check on this video:

Local data

To bind local data to the Query Builder, you can assign the DataSource property with a list of data type.

@using Syncfusion.Blazor.QueryBuilder

<SfQueryBuilder TValue="EmployeeDetails" DataSource="@EmployeeData">
    <QueryBuilderRule Condition="or" Rules="@Rules"></QueryBuilderRule>
    <QueryBuilderColumns>
        <QueryBuilderColumn Field="EmployeeID" Label="Employee ID" Type="ColumnType.Number"></QueryBuilderColumn>
        <QueryBuilderColumn Field="FirstName" Label="First Name" Type="ColumnType.String"></QueryBuilderColumn>
        <QueryBuilderColumn Field="HireDate" Label="Hire Date" Type="ColumnType.Date"></QueryBuilderColumn>
        <QueryBuilderColumn Field="Country" Label="Country" Type="ColumnType.String"></QueryBuilderColumn>
    </QueryBuilderColumns>
</SfQueryBuilder>

@code {
    //Rules binding
    List<RuleModel> Rules = new List<RuleModel>()
    {
            new RuleModel { Field="Country", Label="Country", Type="String", Operator="equal", Value = "England" },
            new RuleModel { Field="EmployeeID", Label="EmployeeID",  Type="Number", Operator="notequal", Value = 1001 }
    };

    public List<EmployeeDetails> EmployeeData = new List<EmployeeDetails>
    {
        new EmployeeDetails{ FirstName = "Martin", EmployeeID = 1001, Country = "England", City = "Manchester", HireDate = new DateTime(2014, 4, 23) },
        new EmployeeDetails{ FirstName = "Benjamin", EmployeeID = 1002, Country = "England", City = "Birmingham", HireDate = new DateTime(2014, 6, 19) },
        new EmployeeDetails{ FirstName = "Stuart", EmployeeID = 1003, Country = "England", City = "London", HireDate = new DateTime(2014, 7, 4) },
        new EmployeeDetails{ FirstName = "Ben", EmployeeID = 1004, Country = "USA", City = "California", HireDate = new DateTime(2014, 8, 15) },
        new EmployeeDetails{ FirstName = "Joseph", EmployeeID = 1005, Country = "Spain", City = "Madrid", HireDate = new DateTime(2014, 8, 29) }
    };

    public class EmployeeDetails
    {
        public string FirstName { get; set; }
        public int EmployeeID { get; set; }
        public string Country { get; set; }
        public string City { get; set; }
        public DateTime HireDate { get; set; }
    }
}

Output will be shown as

Query Builder Sample

Remote Data

To bind remote data to Query Builder component, assign service data as an instance of SfDataManager to the DataSource property or by using SfDataManager component. To interact with remote data source, provide the endpoint Url.Refer to the following code example for remote Data binding using OData service.

@using Syncfusion.Blazor.QueryBuilder
@using Syncfusion.Blazor.Data

<SfQueryBuilder TValue="OrderDetails" Width="70%">
    <SfDataManager Url="https://services.odata.org/V4/Northwind/Northwind.svc/Orders" Adaptor="Syncfusion.Blazor.Adaptors.ODataV4Adaptor"></SfDataManager>
</SfQueryBuilder>


@code {
    public class OrderDetails
    {
        public int? OrderID { get; set; }
        public string CustomerID { get; set; }
        public int? EmployeeID { get; set; }
        public double? Freight { get; set; }
        public string ShipCity { get; set; }
        public bool Verified { get; set; }
        public DateTime? OrderDate { get; set; }
        public string ShipName { get; set; }
        public string ShipCountry { get; set; }
        public DateTime? ShippedDate { get; set; }
        public string ShipAddress { get; set; }
    }
}

Output will be shown as

Query Builder Sample