Does Blazor/ASP.NET Core 8 offer more streamlined/concise ways to get (specific) data from the server than this?

Here's an example of the sequence of code to implement a (specific) call from the server:

MyProject/MyProject.Client/Components/Application/PostsBrowser.razor.cs (client)

public partial class PostsBrowser : ComponentBase {    ...    [Inject]    public ClientDbAccess DbAccess { get; set; } = null!;    private string SearchTerm = "";    public async Task<IEnumerable<PostObject>> GetPostsOfCurrentPage_Async() {        var search = new ClientDbAccess.GetPostsByCriteriaParams( bodyPattern: this.SearchTerm );        IEnumerable<PostObject> posts = await this.DbAccess.GetPostsByCriteria_Async( search );        return posts;    }}

MyProject/MyProject.Client/Services/DbAccess_Posts.cs (client)

public partial class ClientDbAccess {    ...    public class GetPostsByCriteriaParams( string bodyPattern ) {        public string BodyPattern { get; } = bodyPattern;    };    public async Task<IEnumerable<PostObject>> GetPostsByCriteria_Async( GetPostsByCriteriaParams parameters ) {        HttpResponseMessage msg = await this.Http.PostAsJsonAsync( "Post/GetByCriteria", parameters );        msg.EnsureSuccessStatusCode();        IEnumerable<PostObject>? ret = await msg.Content.ReadFromJsonAsync<IEnumerable<PostObject>>();        if (ret is null) {            throw new InvalidDataException("Could not deserialize IEnumerable<PostEntry>");        }        return ret;    }}

MyProject/MyProject/Controllers/Post.cs (server)

[ApiController][Route("[controller]")]public class PostController : ControllerBase {    private readonly ServerDbAccess DbAccess;    public PostController(ServerDbAccess dbAccess) {        this.DbAccess = dbAccess;    }    ...    [HttpPost("GetByCriteria")]    public async Task<IEnumerable<PostObject>> GetByCriteria_Async(            ClientDbAccess.GetPostsByCriteriaParams parameters ) {        using IDbConnection dbCon = await this.DbAccess.ConnectDb_Async();        return await this.DbAccess.GetPostsByCriteria_Async(dbCon, parameters);    }}

MyProject/MyProject/Data/DbAccess_Posts.cs (server)

public partial class ServerDbAccess {    public class PostEntryData {        public long Id;        public DateTime Created;        public string Body = "";        public async Task<PostObject> CreatePost_Async(IDbConnection dbCon, ServerDbAccess dbAccess) {            return new PostObject(                id: this.Id,                created: this.Created,                body: this.Body            );        }    }    ...    private (string sql, IDictionary<string, object> sqlParams) GetPostsByCriteriaSql(ClientDbAccess.GetPostsByCriteriaParams parameters ) {        string sql = $"SELECT * FROM Posts AS MyPosts ";        var sqlParams = new Dictionary<string, object>();        if (!string.IsNullOrEmpty(parameters.BodyPattern)) {            sql += "WHERE MyPosts.Body LIKE REPLACE(REPLACE(REPLACE(@Body, '[', '[[]'), '_', '[_]'), '%', '[%]')";            sqlParams["@Body"] = $"%{parameters.BodyPattern}%";        }        return (sql, sqlParams);    }    public async Task<IEnumerable<PostObject>> GetPostsByCriteria_Async(                IDbConnection dbCon,                ClientDbAccess.GetPostsByCriteriaParams parameters ) {        if (parameters.PostsPerPage == 0) {            return Enumerable.Empty<PostObject>();        }        (string sql, IDictionary<string, object> sqlParams) = this.GetPostsByCriteriaSql(parameters, false);        return await dbCon.QueryAsync<PostEntryData>(            sql, new DynamicParameters(sqlParams)        );    }}

What are my options to reduce/improve this pile of code? Preferably ones that exist within Blazor, ASP.NET Core, and the standard libraries only. I'm not asking for improvement upon this specific code; it is just an example of the mess that's happened, and an indication of how it works. I simply need ideas for any available resources or libraries to reduce this boilerplate.