Next5Studio / Lolipop

Lolipop:The easier SQLite database engine for CSharp

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Lolipop:The easier SQLite database engine for CSharp

# Getting started
Setting up the library

The first step is to import this dependency into your project.Please import this lib on Project Resource Manager.

Add config for your application

The second is to open your app.config on "(your project name)/App.config" and insert a node like this:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    ...
    <appSettings>
        <!--The value is your sqlite database location-->
        <add key="DBFilePath" value="./test.db"/>
    </appSettings>
</configuration>

If you encounter such an error:

Hybrid mode assemblies are generated for v2.0.50727 runtime and cannot be loaded at 4.0 runtime without configuration of other information.

You should modify your app.config like this:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <!--Add 'useLegacyV2RuntimeActivationPolicy="true"' in startup node-->

    <startup useLegacyV2RuntimeActivationPolicy="true"> 

        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />

        <supportedRuntime version="v2.0.50727"/>

    </startup>
    ...
    ...
</configuration>

After that configuration process is completed.

#UsAge
  • Make your model extends LolipopDataHelper, like this:
// Lolipop can extend your model to SQL operations
public class Student: LolipopDataHelper
{

    ...
    ...
}
  • Also you can nominate a different file to save your data,like this:
public class MyTime: LolipopDataHelper
{
    // base("d://test.db"),'d://test.db' can be your file path

    public MyTime() : base("d://test.db")

    {

        ...

    }

    ...
    ...

}
  • If you want to add Field constraints for your Model Fields, you can do it like this:
// add 'PRIMARY KEY' constraints for Field named 'StuID'
[LolipopColumnAttr("PRIMARY KEY")]
 public int StuID { get; set; }

After that, the model name(Class Name) will be your SQLite Database Tables name and Fields name in the model will be your Database Tables Fields name.

  • The full example like this:
public class Student: LolipopDataHelper
{

    [LolipopColumnAttr("PRIMARY KEY")]

    public int StuID { get; set; }

    public int StuGrade { get; set; }

    public bool StuSex { get; set; }

    public string StuName { get; set; }

    public string StuClass { get; set; }


    /**

     *    if you want nominate a different file to save your data

     *    public Student():base("d://test.db")

     *    {

     *       ...

     *    }

     */

    public override string ToString()

    {

        return string.Format("学生号:{0}\t年段:{1}\t性别:{2}\t姓名:{3}\t班级:{4}\t", StuID, StuGrade, StuSex, StuName, StuClass);

    }

}
  • Your Database Table will be like this:

  • avatar

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Lolipop:The easier SQLite database engine for CSharp


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