diff --git a/src/PhpSpreadsheet/Reader/Xlsx/ConditionalStyles.php b/src/PhpSpreadsheet/Reader/Xlsx/ConditionalStyles.php
index 1c624e1a3c..5c1a9186c4 100644
--- a/src/PhpSpreadsheet/Reader/Xlsx/ConditionalStyles.php
+++ b/src/PhpSpreadsheet/Reader/Xlsx/ConditionalStyles.php
@@ -97,37 +97,7 @@ private function readStyleRules($cfRules, $extLst)
             }
 
             if (isset($cfRule->dataBar)) {
-                $dataBar = new ConditionalDataBar();
-                //dataBar attribute
-                if (isset($cfRule->dataBar['showValue'])) {
-                    $dataBar->setShowValue((int) $cfRule->dataBar['showValue']);
-                }
-
-                //dataBar children
-                //conditionalFormatValueObjects
-                $cfvoXml = $cfRule->dataBar->cfvo;
-                foreach ((count($cfvoXml) > 1 ? $cfvoXml : [$cfvoXml]) as $cfvo) {
-                    $dataBar->addConditionalFormatValueObject((string) $cfvo['type'], (string) $cfvo['val']);
-                }
-
-                //color
-                if (isset($cfRule->dataBar->color)) {
-                    $dataBar->setColor(new Color((string) $cfRule->dataBar->color['rgb']));
-                }
-                //extLst
-                if (isset($cfRule->extLst)) {
-                    $ns = $cfRule->extLst->getNamespaces(true);
-                    foreach ((count($cfRule->extLst) > 0 ? $cfRule->extLst->ext : [$cfRule->extLst->ext]) as $ext) {
-                        if ((string) $ext['uri'] === '{B025F937-C7B1-47D3-B67F-A62EFF666E3E}') {
-                            $extId = (string) $ext->children($ns['x14'])->id;
-                            if (isset($conditionalFormattingRuleExtensions[$extId])) {
-                                $dataBar->addConditionalFormattingRuleExtList($conditionalFormattingRuleExtensions[$extId]);
-                            }
-                        }
-                    }
-                }
-
-                $objConditional->setDataBar($dataBar);
+                $objConditional->setDataBar($this->readDataBarOfConditionalRule($cfRule, $conditionalFormattingRuleExtensions));
             } else {
                 $objConditional->setStyle(clone $this->dxfs[(int) ($cfRule['dxfId'])]);
             }
@@ -137,4 +107,37 @@ private function readStyleRules($cfRules, $extLst)
 
         return $conditionalStyles;
     }
+
+    private function readDataBarOfConditionalRule($cfRule, $conditionalFormattingRuleExtensions): ConditionalDataBar
+    {
+        $dataBar = new ConditionalDataBar();
+        //dataBar attribute
+        if (isset($cfRule->dataBar['showValue'])) {
+            $dataBar->setShowValue((int) $cfRule->dataBar['showValue']);
+        }
+
+        //dataBar children
+        //conditionalFormatValueObjects
+        $cfvoXml = $cfRule->dataBar->cfvo;
+        foreach ((count($cfvoXml) > 1 ? $cfvoXml : [$cfvoXml]) as $cfvo) {
+            $dataBar->addConditionalFormatValueObject((string) $cfvo['type'], (string) $cfvo['val']);
+        }
+
+        //color
+        if (isset($cfRule->dataBar->color)) {
+            $dataBar->setColor(new Color((string) $cfRule->dataBar->color['rgb']));
+        }
+        //extLst
+        if (isset($cfRule->extLst)) {
+            $ns = $cfRule->extLst->getNamespaces(true);
+            foreach ((count($cfRule->extLst) > 0 ? $cfRule->extLst->ext : [$cfRule->extLst->ext]) as $ext) {
+                $extId = (string) $ext->children($ns['x14'])->id;
+                if (isset($conditionalFormattingRuleExtensions[$extId]) && (string) $ext['uri'] === '{B025F937-C7B1-47D3-B67F-A62EFF666E3E}') {
+                    $dataBar->addConditionalFormattingRuleExtList($conditionalFormattingRuleExtensions[$extId]);
+                }
+            }
+        }
+
+        return $dataBar;
+    }
 }
diff --git a/src/PhpSpreadsheet/Style/ConditionalFormatting/ConditionalFormattingRuleExtension.php b/src/PhpSpreadsheet/Style/ConditionalFormatting/ConditionalFormattingRuleExtension.php
index 3a25bfab3f..ce50a120f7 100644
--- a/src/PhpSpreadsheet/Style/ConditionalFormatting/ConditionalFormattingRuleExtension.php
+++ b/src/PhpSpreadsheet/Style/ConditionalFormatting/ConditionalFormattingRuleExtension.php
@@ -59,49 +59,8 @@ public static function parseExtLstXml($extLstXml)
                     $extFormattingRuleObj->setDataBar($extDataBarObj);
 
                     $dataBarXml = $extCfRuleXml->dataBar;
-                    $dataBarAttribute = $dataBarXml->attributes();
-
-                    //attributes
-                    if ($dataBarAttribute->minLength) {
-                        $extDataBarObj->setMinLength((int) $dataBarAttribute->minLength);
-                    }
-                    if ($dataBarAttribute->maxLength) {
-                        $extDataBarObj->setMaxLength((int) $dataBarAttribute->maxLength);
-                    }
-                    if ($dataBarAttribute->border) {
-                        $extDataBarObj->setBorder((int) $dataBarAttribute->border);
-                    }
-                    if ($dataBarAttribute->gradient) {
-                        $extDataBarObj->setGradient((int) $dataBarAttribute->gradient);
-                    }
-                    if ($dataBarAttribute->direction) {
-                        $extDataBarObj->setDirection((string) $dataBarAttribute->direction);
-                    }
-                    if ($dataBarAttribute->negativeBarBorderColorSameAsPositive) {
-                        $extDataBarObj->setNegativeBarBorderColorSameAsPositive((int) $dataBarAttribute->negativeBarBorderColorSameAsPositive);
-                    }
-                    if ($dataBarAttribute->axisPosition) {
-                        $extDataBarObj->setAxisPosition((string) $dataBarAttribute->axisPosition);
-                    }
-
-                    //children
-                    if ($dataBarXml->borderColor) {
-                        $extDataBarObj->setBorderColor((string) $dataBarXml->borderColor->attributes()['rgb']);
-                    }
-                    if ($dataBarXml->negativeFillColor) {
-                        $extDataBarObj->setNegativeFillColor((string) $dataBarXml->negativeFillColor->attributes()['rgb']);
-                    }
-                    if ($dataBarXml->negativeBorderColor) {
-                        $extDataBarObj->setNegativeBorderColor((string) $dataBarXml->negativeBorderColor->attributes()['rgb']);
-                    }
-                    if ($dataBarXml->axisColor) {
-                        $axisColorAttr = $dataBarXml->axisColor->attributes();
-                        $extDataBarObj->setAxisColor((string) $axisColorAttr['rgb'], (string) $axisColorAttr['theme'], (string) $axisColorAttr['tint']);
-                    }
-                    foreach ($dataBarXml->cfvo as $cfvo) {
-                        $f = (string) $cfvo->children($ns['xm'])->f;
-                        $extDataBarObj->addConditionalFormatValueObject((string) $cfvo->attributes()['type'], null, (empty($f) ? null : $f));
-                    }
+                    self::parseExtDataBarAttributesFromXml($extDataBarObj, $dataBarXml);
+                    self::parseExtDataBarElementChildrenFromXml($extDataBarObj, $dataBarXml, $ns);
                 }
             }
         }
@@ -109,6 +68,53 @@ public static function parseExtLstXml($extLstXml)
         return $conditionalFormattingRuleExtensions;
     }
 
+    private static function parseExtDataBarAttributesFromXml(ConditionalDataBarExtension $extDataBarObj, SimpleXMLElement $dataBarXml): void
+    {
+        $dataBarAttribute = $dataBarXml->attributes();
+        if ($dataBarAttribute->minLength) {
+            $extDataBarObj->setMinLength((int) $dataBarAttribute->minLength);
+        }
+        if ($dataBarAttribute->maxLength) {
+            $extDataBarObj->setMaxLength((int) $dataBarAttribute->maxLength);
+        }
+        if ($dataBarAttribute->border) {
+            $extDataBarObj->setBorder((int) $dataBarAttribute->border);
+        }
+        if ($dataBarAttribute->gradient) {
+            $extDataBarObj->setGradient((int) $dataBarAttribute->gradient);
+        }
+        if ($dataBarAttribute->direction) {
+            $extDataBarObj->setDirection((string) $dataBarAttribute->direction);
+        }
+        if ($dataBarAttribute->negativeBarBorderColorSameAsPositive) {
+            $extDataBarObj->setNegativeBarBorderColorSameAsPositive((int) $dataBarAttribute->negativeBarBorderColorSameAsPositive);
+        }
+        if ($dataBarAttribute->axisPosition) {
+            $extDataBarObj->setAxisPosition((string) $dataBarAttribute->axisPosition);
+        }
+    }
+
+    private static function parseExtDataBarElementChildrenFromXml(ConditionalDataBarExtension $extDataBarObj, SimpleXMLElement $dataBarXml, $ns): void
+    {
+        if ($dataBarXml->borderColor) {
+            $extDataBarObj->setBorderColor((string) $dataBarXml->borderColor->attributes()['rgb']);
+        }
+        if ($dataBarXml->negativeFillColor) {
+            $extDataBarObj->setNegativeFillColor((string) $dataBarXml->negativeFillColor->attributes()['rgb']);
+        }
+        if ($dataBarXml->negativeBorderColor) {
+            $extDataBarObj->setNegativeBorderColor((string) $dataBarXml->negativeBorderColor->attributes()['rgb']);
+        }
+        if ($dataBarXml->axisColor) {
+            $axisColorAttr = $dataBarXml->axisColor->attributes();
+            $extDataBarObj->setAxisColor((string) $axisColorAttr['rgb'], (string) $axisColorAttr['theme'], (string) $axisColorAttr['tint']);
+        }
+        foreach ($dataBarXml->cfvo as $cfvo) {
+            $f = (string) $cfvo->children($ns['xm'])->f;
+            $extDataBarObj->addConditionalFormatValueObject((string) $cfvo->attributes()['type'], null, (empty($f) ? null : $f));
+        }
+    }
+
     /**
      * @return mixed
      */
diff --git a/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php b/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php
index 8bf4b4ee9b..29d61a0e76 100644
--- a/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php
+++ b/src/PhpSpreadsheet/Writer/Xlsx/Worksheet.php
@@ -543,6 +543,39 @@ private static function writeExtConditionalFormattingElements(XMLWriter $objWrit
         $objWriter->endElement(); //end conditionalFormatting
     }
 
+    private function writeDataBarElements(XMLWriter $objWriter, $dataBar): void
+    {
+        if ($dataBar) {
+            $objWriter->startElement('dataBar');
+            self::writeAttributeIf($objWriter, null !== $dataBar->getShowValue(), 'showValue', (string) $dataBar->getShowValue());
+            foreach ($dataBar->getConditionalFormatValueObjects() as $cfvo) {
+                $objWriter->startElement('cfvo');
+                self::writeAttributeIf($objWriter, $cfvo->getType(), 'type', (string) $cfvo->getType());
+                self::writeAttributeIf($objWriter, $cfvo->getValue(), 'val', (string) $cfvo->getValue());
+                $objWriter->endElement();
+            }
+            if ($dataBar->getColor()) {
+                $objWriter->startElement('color');
+                $objWriter->writeAttribute('rgb', $dataBar->getColor()->getARGB());
+                $objWriter->endElement();
+            }
+            $objWriter->endElement(); // end dataBar
+
+            if (count($dataBar->getConditionalFormattingRuleExtList()) > 0) {
+                $objWriter->startElement('extLst');
+                foreach ($dataBar->getConditionalFormattingRuleExtList() as $extension) {
+                    $objWriter->startElement('ext');
+                    $objWriter->writeAttribute('uri', '{B025F937-C7B1-47D3-B67F-A62EFF666E3E}');
+                    $objWriter->startElementNs('x14', 'id', null);
+                    $objWriter->text($extension->getId());
+                    $objWriter->endElement();
+                    $objWriter->endElement();
+                }
+                $objWriter->endElement(); //end extLst
+            }
+        }
+    }
+
     /**
      * Write ConditionalFormatting.
      *
@@ -594,36 +627,7 @@ private function writeConditionalFormatting(XMLWriter $objWriter, Phpspreadsheet
                     }
 
                     //<dataBar>
-                    $dataBar = $conditional->getDataBar();
-                    if ($dataBar) {
-                        $objWriter->startElement('dataBar');
-                        self::writeAttributeIf($objWriter, null !== $dataBar->getShowValue(), 'showValue', (string) $dataBar->getShowValue());
-                        foreach ($dataBar->getConditionalFormatValueObjects() as $cfvo) {
-                            $objWriter->startElement('cfvo');
-                            self::writeAttributeIf($objWriter, $cfvo->getType(), 'type', (string) $cfvo->getType());
-                            self::writeAttributeIf($objWriter, $cfvo->getValue(), 'val', (string) $cfvo->getValue());
-                            $objWriter->endElement();
-                        }
-                        if ($dataBar->getColor()) {
-                            $objWriter->startElement('color');
-                            $objWriter->writeAttribute('rgb', $dataBar->getColor()->getARGB());
-                            $objWriter->endElement();
-                        }
-                        $objWriter->endElement(); // end dataBar
-
-                        if (count($dataBar->getConditionalFormattingRuleExtList()) > 0) {
-                            $objWriter->startElement('extLst');
-                            foreach ($dataBar->getConditionalFormattingRuleExtList() as $extension) {
-                                $objWriter->startElement('ext');
-                                $objWriter->writeAttribute('uri', '{B025F937-C7B1-47D3-B67F-A62EFF666E3E}');
-                                $objWriter->startElementNs('x14', 'id', null);
-                                $objWriter->text($extension->getId());
-                                $objWriter->endElement();
-                                $objWriter->endElement();
-                            }
-                            $objWriter->endElement(); //end extLst
-                        }
-                    }
+                    self::writeDataBarElements($objWriter, $conditional->getDataBar());
 
                     $objWriter->endElement(); //end cfRule