You may be best off reading it use the idatareader interface rather than a dataset. It will be quicker anyway. Not sure why you are getting null reference exceptions off top of my head though.
From: MikeKrop
Hello,
I'm trying to read the excel sheet and save all of its data into the 2D array. The problem is, that enything I do I get the error:System.NullReferenceException. I did FOR loops, I used foreach DataRow etc. but I still fail. My latest try:
Best regards,
Mike.
I'm trying to read the excel sheet and save all of its data into the 2D array. The problem is, that enything I do I get the error:System.NullReferenceException. I did FOR loops, I used foreach DataRow etc. but I still fail. My latest try:
FileStream stream = File.Open(ExcelSourceFile, FileMode.Open, FileAccess.Read);
IExcelDataReader excelReader = Path.GetExtension(ExcelSourceFile).ToLower() == ".xls" ? ExcelReaderFactory.CreateBinaryReader(stream) :ExcelReaderFactory.CreateOpenXmlReader(stream);
DataSet ds = new DataSet();
ds = excelReader.AsDataSet();
DataRowCollection drc = ds.Tables[0].Rows;
int j=0;
for (int i = 0; i < rows; i++)
{
foreach (DataColumn column in ds.Tables[0].Columns)
{
DataFromExcel[i, j] = ds.Tables[0].Rows[i][j];
j++;
}
}Best regards,
Mike.
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