/// <summary>
/// 执行SQL，并返回数据集
/// </summary>
/// <returns></returns>
public DataSet GetDataSet()
{
var page = new DbPage();
page.TotalRowCount = 0;
page.PageIndex = 0;
page.PageRowCount = 0;
return(GetDataSet(page));
}
/// <summary>
/// 执行SQL，并返回数据集
/// </summary>
/// <param name="page"></param>
/// <returns></returns>
public DataTable GetDataTable(DbPage page)
{
var dataset = GetDataSet(page);
if (dataset.Tables.Count > 0)
{
return(dataset.Tables[0]);
}
return(new DataTable());
}
/// <summary>
/// 执行SQL，并返回数据集
/// </summary>
/// <param name="page"></param>
/// <returns></returns>
public DataSet GetDataSet(DbPage page)
{
var reader = getDataReader();
var result = new DataSet();
try
{
var rowIdx = (page.PageIndex - 1) * page.PageRowCount;
if (rowIdx < 0)
{
rowIdx = 0;
}
var rowcount = page.PageRowCount;
var total = 0;
var index = 0;
var count = 0;
do
{
var dTable = new DataTable(Guid.NewGuid().ToString("D"));
var fieldCount = reader.FieldCount;
if (fieldCount == 0)
{
break;
}
for (var i = 0; i < fieldCount; i++)
{
var dc = new DataColumn();
dc.ColumnName = GetDataColumnName(reader.GetName(i), dTable);
dc.DataType = reader.GetFieldType(i);
dTable.Columns.Add(dc);
}
dTable.BeginLoadData();
while (reader.Read())
{
index++;
if (page.TotalRowCount == 0)
{
total++;
}
bool addRow = true;
if (rowIdx > 0 && rowcount > 0)
{
if (count >= rowcount)
{
break;
}
if (index <= rowIdx)
{
addRow = false;
}
}
if (addRow)
{
count++;
var row = dTable.NewRow();
for (var i = 0; i < fieldCount; i++)
{
if (reader.IsDBNull(i))
{
row[i] = DBNull.Value;
}
else
{
try
{
row[i] = reader.GetValue(i);
}
catch
{
row[i] = DBNull.Value;
}
}
}
dTable.Rows.Add(row);
}
}
if (total > 0)
{
page.TotalRowCount = total;
}
dTable.EndLoadData();
result.Tables.Add(dTable);
} while (reader.NextResult());
}
finally
{
doClose(reader);
}
return(result);
}
