Json column in blazor

Question

Hi I want to make a json column in database through code first approach in blazor application can anyone please help me in this. Also want to do crud operation in this column

Deepak Rawat · Answer

Step 1: Define the model class Create a model class that represents the table in which you want to store the JSON column. In this class, define a property of type string to hold the JSON data. public class YourModel { public int Id { get; set; } public string JsonData { get; set; } // Other properties } Step 2: Configure the DbContext In your DbContext class, configure the entity and specify the column type as JSON. public class YourDbContext : DbContext { public DbSet YourModels { get; set; } protected override void OnModelCreating(ModelBuilder modelBuilder) { modelBuilder.Entity () .Property(e => e.JsonData) .HasColumnType("jsonb"); // Assuming you're using PostgreSQL // Other configurations } } Note: The column type jsonb is specific to PostgreSQL. If you're using a different database provider, the column type may vary. Step 3: Perform CRUD operations You can now perform CRUD operations on the JSON column using the standard Entity Framework Core methods. public class YourService { private readonly YourDbContext _dbContext; public YourService(YourDbContext dbContext) { _dbContext = dbContext; } public async Task Create(YourModel model) { _dbContext.YourModels.Add(model); await _dbContext.SaveChangesAsync(); } public async Task Read(int id) { return await _dbContext.YourModels.FindAsync(id); } public async Task Update(YourModel model) { _dbContext.YourModels.Update(model); await _dbContext.SaveChangesAsync(); } public async Task Delete(int id) { var model = await _dbContext.YourModels.FindAsync(id); if (model != null) { _dbContext.YourModels.Remove(model); await _dbContext.SaveChangesAsync(); } } } Now you can inject YourService into your Blazor components or controllers and use it to perform CRUD operations on the JSON column. Remember to configure your database connection string in appsettings.json or via your preferred configuration method. Please note that the specific implementation details may vary depending on your database provider and any additional requirements you might have. This is just a general guideline to get you started with a JSON column in a Blazor application using code-first approach with Entity Framework Core.

Json column in blazor

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