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    IQueryWhereBuilder.WhereValue(string left, SqlBinaryOperator sqlOperator, object value) Method

    .NET Standard 2.x

    Creates a WHERE clause, and adds a search condition to the WHERE clause. Specifies a SQL expression on the left of the operator and a specific value on the right of the operator.

    Namespace: SnapObjects.Data

    Assembly: SnapObjects.Data.dll

    Syntax

    IQueryAndOrBuilder<TModel> WhereValue(string left, SqlBinaryOperator sqlOperator, object value)
    

    Parameters

    left System.String

    An expression on the left of the operator.

    SqlBinaryOperator SnapObjects.Data.SqlBinaryOperator

    An enumeration value of SqlBinaryOperator, which is the operator to test the expression on the left and the value on the right.

    value System.Object

    A specific value on the right of the operator.

    Returns

    IQueryAndOrBuilder<TModel>

    Returns an IQueryAndOrBuilder<TModel> object which can be used to add more search conditions to the current WHERE clause.

    Examples

    The following code example uses the WhereValue method to specify that data retrieved from the "Department" table must not use "Economics" as its Name value.

    using Appeon.ApiDoc.Models.School;
    using SnapObjects.Data;
    using System;
    using System.Threading.Tasks;
    
    namespace Appeon.ApiDoc.IQueryWhereBuilderExamples
    {
        public class WhereValueExample
        {
            private SchoolContext _context;
            
            public WhereValueExample(SchoolContext dataContext)
            {
                // Sets Data Context
                _context = dataContext;
            }
    
            public async Task<int> Example2()
            {
                // Get a QueryBuilder.
                var Builder = _context.SqlModelMapper.GetQueryBuilder<Department>();
                
                // Creates a WHERE clause, and adds a search condition to the WHERE clause. 
                // Specifies a SQL expression on the left of the operator and a specific
                // value on the right of the operator. 
                Builder.WhereValue("Name", SqlBinaryOperator.NotEquals, "Economics");
                
                var result = (await Builder.LoadAsync()).ToList();
                
                foreach (var dept in result) 
                {
                    Console.WriteLine("DepartmentID:    {0}", dept.DepartmentID);
                    Console.WriteLine("Name:            {0}", dept.Name);
                    Console.WriteLine();
                }
                
                return result.Count;
                
                /*This code example produces the following output:   
                
                    DepartmentID:    1
                    Name:            Engineering
                    
                    DepartmentID:    2
                    Name:            English
                    
                    DepartmentID:    7
                    Name:            Mathematics
                    
                    DepartmentID:    10
                    Name:            New Department
                */
            }
        }
    }
    

    Example Refer To

    Model Class: Department

    Applies to

    .NET Standard

    2.x

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