轻松将DataReader转换成DataTable

 在程序开发中,有时候需要用将DataReader转换成DataTable,我这里有一段代码供新手参考!

///   <summary>

///  把DataReader转换成DataTable

///   </summary>

///   <param name="vDataReader"> 预转换的DataReader </param>

///   <returns> DataTable </returns>

public  DataTable[] DataReaderToDataTables(OleDbDataReader vDataReader)

{

ArrayList TableArrayList  =   new  ArrayList();

do

{

DataTable NewDataTable  =   new  DataTable();

DataTable TableSchema  =  vDataReader.GetSchemaTable();

for ( int  i = 1 ;i <= TableSchema.Rows.Count;i ++ ) 

NewDataTable.Columns.Add(TableSchema.Rows[i - 1 ]〔 " ColumnName " 〕.ToString(), System.Type.GetType(TableSchema.Rows[i - 1 ]〔 " DataType " 〕.ToString()));

while (vDataReader.Read() == true )

{

DataRow NewDataRow  =  NewDataTable.NewRow();

for ( int  i = 1 ;i <= vDataReader.FieldCount;i ++ )

NewDataRow[i - 1 ]  =  vDataReader[i - 1 ];

NewDataTable.Rows.Add(NewDataRow);

} 

TableArrayList.Add(NewDataTable);

} while (vDataReader.NextResult() == true );

 

DataTable[] ReturnDataTable  =   new  DataTable[TableArrayList.Count];

for ( int  i = 1 ;i <= TableArrayList.Count;i ++ )

ReturnDataTable[i - 1 ]  =  (DataTable)TableArrayList[i - 1 ];

return  ReturnDataTable;

}