本文整理汇总了C#中CsvWriter.AssertNotNull方法的典型用法代码示例。如果您正苦于以下问题：C# CsvWriter.AssertNotNull方法的具体用法？C# CsvWriter.AssertNotNull怎么用？C# CsvWriter.AssertNotNull使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CsvWriter的用法示例。
在下文中一共展示了CsvWriter.AssertNotNull方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: CopyTo
/// <summary>
/// Copies all remaining records in <paramref name="this"/> to <paramref name="destination"/>.
/// </summary>
/// <param name="this">
/// The data source.
/// </param>
/// <param name="destination">
/// The data destination.
/// </param>
/// <returns>
/// The number of records written to <paramref name="destination"/>.
/// </returns>
public static int CopyTo(this CsvReader @this, CsvWriter destination)
{
@this.AssertNotNull("@this");
destination.AssertNotNull("destination");
var num = 0;
var buffer = new DataRecord[16];
var read = 0;
while ((read = @this.ReadDataRecords(buffer, 0, buffer.Length)) != 0)
{
destination.WriteRecords(buffer, 0, read);
num += read;
}
return num;
}示例2: CopyToAsync
/// <summary>
/// Asynchronously copies all remaining records in <paramref name="this"/> to <paramref name="destination"/>.
/// </summary>
/// <param name="this">
/// The data source.
/// </param>
/// <param name="destination">
/// The data destination.
/// </param>
/// <returns>
/// The number of records written to <paramref name="destination"/>.
/// </returns>
public async static Task<int> CopyToAsync(this CsvReader @this, CsvWriter destination)
{
@this.AssertNotNull("@this");
destination.AssertNotNull("destination");
var num = 0;
var buffer = new DataRecord[16];
var read = 0;
while ((read = await @this.ReadDataRecordsAsync(buffer, 0, buffer.Length).ConfigureAwait(false)) != 0)
{
await destination.WriteRecordsAsync(buffer, 0, read).ConfigureAwait(false);
num += read;
}
return num;
}示例3: WriteCsvAsync
/// <summary>
/// Asynchronously writes all rows in <paramref name="this"/> to <paramref name="csvWriter"/>.
/// </summary>
/// <remarks>
/// </remarks>
/// <param name="this">
/// The <see cref="DataTable"/>.
/// </param>
/// <param name="csvWriter">
/// The <see cref="CsvWriter"/>.
/// </param>
/// <param name="writeHeaderRecord">
/// If <see langword="true"/>, a header record will also be written, which will be comprised of the column names defined for <paramref name="this"/>.
/// </param>
/// <param name="maximumRows">
/// The maximum number of rows from <paramref name="this"/> that should be written to <paramref name="csvWriter"/>.
/// </param>
/// <param name="objectToStringConverter">
/// Provides a means of converting values in the <see cref="DataRow"/>s to <see cref="String"/>s.
/// </param>
/// <returns>
/// The actual number of rows from <paramref name="this"/> written to <paramref name="csvWriter"/>.
/// </returns>
public async static Task<int> WriteCsvAsync(this DataTable @this, CsvWriter csvWriter, bool writeHeaderRecord, int? maximumRows, Func<object, string> objectToStringConverter)
{
@this.AssertNotNull("@this");
csvWriter.AssertNotNull("csvWriter");
objectToStringConverter.AssertNotNull("objectToStringConverter");
var num = 0;
if (writeHeaderRecord)
{
var columnNames = new string[@this.Columns.Count];
for (var i = 0; i < columnNames.Length; ++i)
{
columnNames[i] = @this.Columns[i].ColumnName;
}
await csvWriter.WriteRecordAsync(columnNames).ConfigureAwait(false);
}
var maximum = maximumRows.GetValueOrDefault(int.MaxValue);
var buffer = new DataRecord[16];
var bufferOffset = 0;
foreach (DataRow row in @this.Rows)
{
var record = new DataRecord();
for (var i = 0; i < row.ItemArray.Length; ++i)
{
record.Add(objectToStringConverter(row.ItemArray[i]));
}
buffer[bufferOffset++] = record;
if (bufferOffset == buffer.Length)
{
// buffer full
await csvWriter.WriteRecordsAsync(buffer, 0, buffer.Length).ConfigureAwait(false);
bufferOffset = 0;
}
if (++num == maximum)
{
break;
}
}
// write any outstanding data in buffer
await csvWriter.WriteRecordsAsync(buffer, 0, bufferOffset).ConfigureAwait(false);
return num;
}