# Information Functions

## Content

DsExcel.NET provides the following information functions, listed alphabetically.

| Function | Description |
| -------- | ----------- |
| [CELL](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/cell) | This function returns information about the formatting, location, or contents of a cell. |
| [ERROR.TYPE](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/errortype) | This function returns a number corresponding to one of the error values. |
| [ISBLANK](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isblank) | This function tests whether a value, an expression or contents of a referenced cell is empty. |
| [ISERR](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/iserr) | This function, Is Error Other Than Not Available, tests whether a value, an expression or contents of a referenced cell has an error other than not available (#N/A). |
| [ISERROR](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/iserror) | This function, Is Error of Any Kind, tests whether a value, an expression or contents of a referenced cell has an error of any kind. |
| [ISEVEN](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/iseven) | This function, Is Number Even, tests whether a value, an expression or contents of a referenced cell is even. |
| [ISFORMULA](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isformula) | This function tests whether contains a formula of a referenced cell. |
| [ISLOGICAL](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/islogical) | This function tests whether a value, an expression or the contents of a referenced cell is a logical (Boolean) value. |
| [ISNA](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isna) | This function, Is Not Available, tests whether a value, an expression or contents of a referenced cell has the not available (#N/A) error value. |
| [ISNONTEXT](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isnontext) | This function tests whether a value, an expression or contents of a referenced cell has any data type other than text. |
| [ISNUMBER](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isnumber) | This function tests whether a value, an expression or contents of a referenced cell has numeric data. |
| [ISODD](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isodd) | This function, Is Number Odd, tests whether a value, an expression or contents of a referenced cell has numeric data. |
| [ISOMITTED](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isomitted) | This function checks whether the value in a LAMBDA is missing and returns TRUE or FALSE. |
| [ISREF](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/isref) | This function, Is Reference, tests whether a value, an expression or contents of a referenced cell is a reference to another cell. |
| [ISTEXT](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/istext) | This function tests whether a value, an expression or contents of a referenced cell has text data. |
| [N](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/n) | This function returns a value converted to a number. |
| [NA](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/na) | This function returns the error value #N/A which means not available. |
| [SHEET](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/sheet) | This function returns the sheet number of the reference sheet. |
| [SHEETS](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/sheets) | This function returns the number of sheets in a reference. |
| [TYPE](/document-solutions/dot-net-excel-api/docs/online/formula-reference/information-functions/type) | This function returns the type of value. |