I am doing a project in C# and I have downloaded excel data reader from codeplex and added it to my project reference. There is no error in naamespace 'using excel;' but 'm getting error where I have written
```
```
IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
```
```
The errors are quoted below:
> The type or namespace name 'ExcelDataReader' could not be found (are you missing a using directive or an assembly reference?)
> The name 'ExcelReaderFactory' does not exist in the current context
How to deal with these errors?
```
```
IExcelDataReader excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream);
```
```
The errors are quoted below:
> The type or namespace name 'ExcelDataReader' could not be found (are you missing a using directive or an assembly reference?)
> The name 'ExcelReaderFactory' does not exist in the current context
How to deal with these errors?