将数据分配给静态类中的对象
本文关键字:对象 静态类 数据 分配 | 更新日期: 2023-09-27 17:50:58
我有一个静态类,我想有一个SQLConnectionString被构建。
public static class SharedUtilities
{
public static SqlConnectionStringBuilder connectionString = new SqlConnectionStringBuilder();
SharedUtilities()
{
connectionString.DataSource = "dx2v";
connectionString.InitialCatalog = "Q619410";
connectionString.UserID = "tunnelld";
connectionString.Password = "david";
}
}
这不起作用,因为你可以在静态类上有构造函数。那么我该怎么做呢?
您在构造函数中忘记了static
关键字:
static SharedUtilities()
因为您省略了它,它默认为private
,这对于静态类是无效的。
一种方法是使用一个按需构建对象的属性(创建并填写私有支持属性)。
public static class SharedUtilities
{
private static SqlConnectionStringBuilder connectionString = null;
public static SqlConnectionStringBuilder ConnectionString
{
get
{
if (connectionString == null)
{
connectionString = new SqlConnectionStringBuilder()
{
DataSource = "dx2v",
InitialCatalog = "Q619410",
UserID = "tunnelld",
Password = "david",
};
}
return connectionString;
}
}
}
参考:延迟加载