SqlConnectionStringBuilder.InitialCatalog 属性

定义

命名空间:

Microsoft.Data.SqlClient

程序集:

Microsoft.Data.SqlClient.dll

包:

Microsoft.Data.SqlClient v5.2.0

获取或设置与连接关联的数据库的名称。

public:
 property System::String ^ InitialCatalog { System::String ^ get(); void set(System::String ^ value); };

public string InitialCatalog { get; set; }

member this.InitialCatalog : string with get, set

Public Property InitialCatalog As String

属性值

String

为 InitialCatalog 属性的值，或者，如果未提供任何值，则为 String.Empty。

例外

ArgumentNullException

若要将值设置为 null，请使用 Value。

示例

以下示例创建一个简单的连接字符串，然后使用 SqlConnectionStringBuilder 类将数据库的名称添加到该连接字符串。 该代码将显示 InitialCatalog 属性的内容，以验证该类能够从同义词 ("Database") 转换为相应的属性值。

using Microsoft.Data.SqlClient;

class Program
{
    static void Main()
    {
        try
        {
            string connectString = "Data Source=(local);" +
                "Integrated Security=true";

            SqlConnectionStringBuilder builder =
                new SqlConnectionStringBuilder(connectString);
            Console.WriteLine("Original: " + builder.ConnectionString);

            // Normally, you could simply set the InitialCatalog
            // property of the SqlConnectionStringBuilder object. This
            // example uses the default Item property (the C# indexer)
            // and the "Database" string, simply to demonstrate that
            // setting the value in this way results in the same
            // connection string:
            builder["Database"] = "AdventureWorks";
            Console.WriteLine("builder.InitialCatalog = "
                + builder.InitialCatalog);
            Console.WriteLine("Modified: " + builder.ConnectionString);

            using (SqlConnection connection =
                new SqlConnection(builder.ConnectionString))
            {
                connection.Open();
                // Now use the open connection.
                Console.WriteLine("Database = " + connection.Database);
            }

        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }

        Console.WriteLine("Press any key to finish.");
        Console.ReadLine();
    }
}

注解

此属性与连接字符串内的“Initial Catalog”和“database”键相对应。

数据库名称可以是 128 个字符或更少。