Question

我试图将一些数据添加到数据库中，但它没有在数据库表中添加，但它也没有显示任何异常。我不知道这是什么问题

      try
      {
       SqlConnection con = new SqlConnection(@"data source=(LocalDB)\v11.0;attachdbfilename=|DataDirectory|\Database1.mdf;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework");
       con.Open();                       
       SqlCommand cmd = new SqlCommand("insert into Store(Item,Description,Expences) values('pen','blue','10')", con);
       cmd.ExecuteNonQuery();
       con.Close();
      }

我的应用配置文件

     [![<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
  </startup>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
  <connectionStrings>   
  <add name="StoreContext" connectionString="data source=(LocalDB)\v11.0;attachdbfilename=|DataDirectory|\Database1.mdf;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" /></connectionStrings>
</configuration>][1]][1]

我的表

   CREATE TABLE [dbo].[Store] (
   [Id]          INT           IDENTITY (1, 1) NOT NULL,
   [Item]        VARCHAR (20)  NOT NULL,
   [Description] VARCHAR (100) NULL,
   [Expences]    INT           NOT NULL,
   PRIMARY KEY CLUSTERED ([Id] ASC)
 );

Answer 1

尝试下面的代码，下面的代码是在不使用任何工具的情况下编写的，因此请尝试调整代码。

try
{  
            DbContext xyz = new DbContext();
            Store oStore = new Store();
            oStore.Item = "pen";
            oStore.Description = "blue";
            oStore.Expences = 10;
            xyz.Stores.Add(oStore);
            xyz.SaveChanges(); // never forgot to do SaveChanges  
}
catch(Exception ex)
{
       MessageBox.Show(ex.Message);
}

Answer 2

您的请求中有错误，Expences是一个整数：

SqlCommand cmd = new SqlCommand("insert into Store(Item,Description,Expences) values('pen','blue',10)", con);

尝试将数据添加到数据库中但未添加到表

2 个答案: