如何：列出数据对象中的数据格式
更新：2007 年 11 月
下面的示例演示如何使用 GetFormats 方法重载获取一个字符串数组，该数组表示某数据对象中可用的所有数据格式。
示例
说明
下面的示例代码使用 GetFormats 重载获取一个字符串数组，该数组用于表示某数据对象中可用的所有数据格式（包括本机和可自动转换的格式）。
代码
DataObject dataObject = new DataObject("Some string data to store...");
// Get an array of strings, each string denoting a data format
// that is available in the data object. This overload of GetDataFormats
// returns all available data formats, native and auto-convertible.
string[] dataFormats = dataObject.GetFormats();
// Get the number of data formats present in the data object, including both
// auto-convertible and native data formats.
int numberOfDataFormats = dataFormats.Length;
// To enumerate the resulting array of data formats, and take some action when
// a particular data format is found, use a code structure similar to the following.
foreach (string dataFormat in dataFormats)
{
if (dataFormat == DataFormats.Text)
{
// Take some action if/when data in the Text data format is found.
break;
}
else if(dataFormat == DataFormats.StringFormat)
{
// Take some action if/when data in the string data format is found.
break;
}
}
示例
说明
下面的示例代码使用 GetFormats 重载获取一个字符串数组，该数组仅表示某数据对象中可用的数据格式（筛选出可自动转换的数据格式）。
代码
DataObject dataObject = new DataObject("Some string data to store...");
// Get an array of strings, each string denoting a data format
// that is available in the data object. This overload of GetDataFormats
// accepts a Boolean parameter inidcating whether to include auto-convertible
// data formats, or only return native data formats.
string[] dataFormats = dataObject.GetFormats(false /* Include auto-convertible? */);
// Get the number of native data formats present in the data object.
int numberOfDataFormats = dataFormats.Length;
// To enumerate the resulting array of data formats, and take some action when
// a particular data format is found, use a code structure similar to the following.
foreach (string dataFormat in dataFormats)
{
if (dataFormat == DataFormats.Text)
{
// Take some action if/when data in the Text data format is found.
break;
}
}