evega - 8 months ago 80

C# Question

When try to assign a concatenated string to Range.Formula, doesn't works, but simple string do perfectly.

Working code:

`string formula = string.Format("=Round1!D{0} + Round2!D{0}", cellId);`

myRange.Formula = formula;

Failing code:

`string formula = string.Format("=Round{0}!D{1}!", 1, cellId);`

for (int i = 2; i <= numRounds; i++)

formula += string.Format(" + Round{0}!D{1}!", i, cellId);

myRange.Formula = formula;

¿WTF? xD

This makes imposible to generate the formula dinamicly

Thank you in advance.

Answer

```
string formula = string.Format("=Round{0}!D{2} + Round{1}!D{2}", 1, 2 cellId);
myRange.Formula = formula;
```

If the sheets `Round1`

to `Round3`

(`numRounds`

) are in order in the Workbook, then you can use 3-D reference. For example:

```
= Sum( Round1:Round3!D3 )
```

which will be the same as

```
= Round1!D3 + Round2!D3 + Round3!D3
```