asp.net web api c# 接口数据提供者

Question

请查看代码，我在将接口调用到dataprovider时发现以下错误

错误行::: public class UserDataProvider : IUserDataProvider

错误文本::: 'UserDataProvider' 没有实现接口成员 'IUserDataProvider.gettabs()'

我会感谢你

Web API c# 代码

接口代码：

using System.Collections.Generic;
using System.Threading.Tasks;
using WebAPIceoTransaction.Models;

namespace WebAPIceoTransaction.DataProvider
{
public interface IUserDataProvider
{
   Task<IEnumerable<TabMain>> Gettabs();

    Task<TabMain> Gettab(int fid);

    Task Addtab(TabMain Tab);

    Task Updatetab(TabMain Tab);

    Task DeleteTab(int fid);
}
}

数据提供者代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Dapper;
using Microsoft.EntityFrameworkCore;
using System.Data;
using System.Data.SqlClient;
using WebAPIceoTransaction.Models;
namespace WebAPIceoTransaction.DataProvider

{
public class UserDataProvider : IUserDataProvider
{
    private readonly string connectionString = "Server=******;Database=****;Trusted_Connection=True;";

    private SqlConnection sqlConnection;

    public async Task AddTab(TabMain tabmain)
    {
        using (var sqlConnection = new SqlConnection(connectionString))
        {
            await sqlConnection.OpenAsync();
            var dynamicParameters = new DynamicParameters();
            dynamicParameters.Add("@FName", tabmain.FName);
            dynamicParameters.Add("@FCompany", tabmain.FCompany);
            dynamicParameters.Add("@FDate", tabmain.FDate);
            dynamicParameters.Add("@FAmount", tabmain.FAmount);

            dynamicParameters.Add("@FPaid", tabmain.FPaid);
            dynamicParameters.Add("@FTransferType", tabmain.FTransferType);
            dynamicParameters.Add("@FChequeNo", tabmain.FChequeNo);
            dynamicParameters.Add("@FBank", tabmain.FBank);
            dynamicParameters.Add("@FAccountNo", tabmain.FAccountNo);
            dynamicParameters.Add("@Purpose", tabmain.Purpose);


            await sqlConnection.ExecuteAsync(
                "spAddTab",
                dynamicParameters,
                commandType: CommandType.StoredProcedure);
        }
    }

    public async Task DeleteTab(int fid)
    {
        using (var sqlConnection = new SqlConnection(connectionString))
        {
            await sqlConnection.OpenAsync();
            var dynamicParameters = new DynamicParameters();
            dynamicParameters.Add("@Fid", fid);
            await sqlConnection.ExecuteAsync(
                "spDeleteUser",
                dynamicParameters,
                commandType: CommandType.StoredProcedure);
        }
    }

    public async Task<TabMain> GetTab(int fid)
    {
        using (var sqlConnection = new SqlConnection(connectionString))
        {
            await sqlConnection.OpenAsync();
            var dynamicParameters = new DynamicParameters();
            dynamicParameters.Add("@fid", fid);
            return await sqlConnection.QuerySingleOrDefaultAsync<TabMain>(
                "spGetTab",
                dynamicParameters,
                commandType: CommandType.StoredProcedure);
        }
    }

    public async Task<IEnumerable<TabMain>> GetTabs()
    {
        using (var sqlConnection = new SqlConnection(connectionString))
        {
            await sqlConnection.OpenAsync();
            return await sqlConnection.QueryAsync<TabMain>(
                "spGetTabs",
                null,
                commandType: CommandType.StoredProcedure);
        }
    }

    public async Task UpdateTab(TabMain tabmain)
    {
        using (var sqlConnection = new SqlConnection(connectionString))
        {
            await sqlConnection.OpenAsync();
            var dynamicParameters = new DynamicParameters();
            dynamicParameters.Add("@FName", tabmain.FName);
            dynamicParameters.Add("@FCompany", tabmain.FCompany);
            dynamicParameters.Add("@FDate", tabmain.FDate);
            dynamicParameters.Add("@FAmount", tabmain.FAmount);

            dynamicParameters.Add("@FPaid", tabmain.FPaid);
            dynamicParameters.Add("@FTransferType", tabmain.FTransferType);
            dynamicParameters.Add("@FChequeNo", tabmain.FChequeNo);
            dynamicParameters.Add("@FBank", tabmain.FBank);
            dynamicParameters.Add("@FAccountNo", tabmain.FAccountNo);
            dynamicParameters.Add("@Purpose", tabmain.Purpose);
            await sqlConnection.ExecuteAsync(
                "spUpdateTab",
                dynamicParameters,
                commandType: CommandType.StoredProcedure);
        }
    }

}

}

Answer 1

在您的界面中，您将其定义为

Task<IEnumerable<TabMain>> Gettabs();

但你是这样实现的

 public async Task<IEnumerable<TabMain>> GetTabs()

C# 是一种区分大小写的语言，因此您需要更改实现方法名称或接口方法名称。我会将接口方法名称更改为 GetTabs 以符合标准命名约定

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