Commented Unassigned: Error doing data validation from another sheet [9498]

When using closedxml to add data validation to a file, all validations are written in the <x:dataValidations> element. However, this is not how excel saves data validation from other sheets.

Here's how closed xml saves it:

```
<x:dataValidations count="3">
<x:dataValidation type="list" errorStyle="warning" operator="between" allowBlank="0" showDropDown="0" showInputMessage="1" showErrorMessage="1" errorTitle="" error="" promptTitle="" prompt="" sqref="B6:B6">
<x:formula1>"Foo,Bar,FooBar"</x:formula1>
<x:formula2></x:formula2>
</x:dataValidation>
<x:dataValidation type="list" errorStyle="warning" operator="between" allowBlank="0" showDropDown="0" showInputMessage="1" showErrorMessage="1" errorTitle="" error="" promptTitle="" prompt="" sqref="C6:C6">
<x:formula1>'HiddenDataValSheet'!$A$1:$A$1000</x:formula1>
<x:formula2></x:formula2>
</x:dataValidation>
<x:dataValidation type="list" errorStyle="warning" operator="between" allowBlank="0" showDropDown="0" showInputMessage="1" showErrorMessage="1" errorTitle="" error="" promptTitle="" prompt="" sqref="D6:D6">
<x:formula1>'HiddenDataValSheet'!$B$1:$B$1000</x:formula1>
<x:formula2></x:formula2>
</x:dataValidation>
</x:dataValidations>

```

And here's how excel saves it:

```
<extLst>
<ext uri="{CCE6A557-97BC-4b89-ADB6-D9C93CAAB3DF}" xmlns:x14="http://schemas.microsoft.com/office/spreadsheetml/2009/9/main">
<x14:dataValidations count="2" xmlns:xm="http://schemas.microsoft.com/office/excel/2006/main">
<x14:dataValidation type="list" errorStyle="warning" showInputMessage="1" showErrorMessage="1">
<x14:formula1>
<xm:f>HiddenDataValSheet!$A$1:$A$1000</xm:f>
</x14:formula1>
<xm:sqref>C6</xm:sqref>
</x14:dataValidation>
<x14:dataValidation type="list" errorStyle="warning" showInputMessage="1" showErrorMessage="1">
<x14:formula1>
<xm:f>HiddenDataValSheet!$B$1:$B$1000</xm:f>
</x14:formula1>
<xm:sqref>D6</xm:sqref>
</x14:dataValidation>
</x14:dataValidations>
</ext>

```

I'll need to modify the closed xml code to be able to read the data validations from the <extLst> element and treat them like normal data validations.
Comments: I got this working. Here's the code I added: ``` private static void LoadWorksheetExtensions(WorksheetExtensionList extensions, XLWorksheet ws) { if (extensions == null) return; // get each extension element foreach (WorksheetExtension we in extensions.Elements<WorksheetExtension>()) { // get data validations element var dataValidationList = we.Elements<DocumentFormat.OpenXml.Office2010.Excel.DataValidations>().ToList(); foreach (var dataValidations in dataValidationList) { LoadWorksheetExtensionDataValidations(dataValidations, ws); } } } ``` ``` private static void LoadWorksheetExtensionDataValidations( DocumentFormat.OpenXml.Office2010.Excel.DataValidations dataValidations, XLWorksheet ws) { if (dataValidations == null) return; // get each datavalidation element foreach (DocumentFormat.OpenXml.Office2010.Excel.DataValidation dv in dataValidations.Elements<DocumentFormat.OpenXml.Office2010.Excel.DataValidation>()) { // get the data validation object we want to modify based on the cell reference var txt = dv.ReferenceSequence.InnerText; if (XLHelper.IsNullOrWhiteSpace(txt)) continue; foreach (var dvt in txt.Split(' ').Select(rangeAddress => ws.Range(rangeAddress).DataValidation)) { if (dv.AllowBlank != null) dvt.IgnoreBlanks = dv.AllowBlank; if (dv.ShowDropDown != null) dvt.InCellDropdown = !dv.ShowDropDown.Value; if (dv.ShowErrorMessage != null) dvt.ShowErrorMessage = dv.ShowErrorMessage; if (dv.ShowInputMessage != null) dvt.ShowInputMessage = dv.ShowInputMessage; if (dv.PromptTitle != null) dvt.InputTitle = dv.PromptTitle; if (dv.Prompt != null) dvt.InputMessage = dv.Prompt; if (dv.ErrorTitle != null) dvt.ErrorTitle = dv.ErrorTitle; if (dv.Error != null) dvt.ErrorMessage = dv.Error; if (dv.ErrorStyle != null) dvt.ErrorStyle = dv.ErrorStyle.Value.ToClosedXml(); if (dv.Type != null) dvt.AllowedValues = dv.Type.Value.ToClosedXml(); if (dv.Operator != null) dvt.Operator = dv.Operator.Value.ToClosedXml(); if (dv.DataValidationForumla1 != null) dvt.MinValue = dv.DataValidationForumla1.InnerText; if (dv.DataValidationForumla2 != null) dvt.MaxValue = dv.DataValidationForumla2.InnerText; } } } ```