code pour écrire dans un fichier excel

**guintolli** · 21/07/2008, 14h59

Je cherche à réaliser un alerte qui a besoin de lire et écrire des informations dans un fichier excel stocké dans une liste.

Savez vous comment réaliser cette lecture et écriture dans une case définie?

**dnt91** · 21/07/2008, 22h22

Si tu cherches un peu sur le net, tu trouveras tout un tas de snippets qui feront ton bonheur.
Voici par exemple 2 methodes, l'une pour écrire une chaine de caractères, et l'autre pour écrire une valeur entière.
Sur codeplex, il y'a également un projet qui facilite la lecture/écriture dans les fichiers Excel 2007.
Bref, en cherchan un peu, tu devrais tout trouver.

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

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private bool XLInsertNumberIntoCell(string fileName, string sheetName, string addressName, string value)
        {
            const string documentRelationshipType = "http://schemas.openxmlformats.org/officeDocument/2006/" +
              "relationships/officeDocument";
            const string worksheetSchema = "http://schemas.openxmlformats.org/spreadsheetml/2006/main";
 
            PackagePart documentPart = null;
            Uri documentUri = null;
            bool returnValue = false;
 
            using (Package xlPackage = Package.Open(fileName, FileMode.Open, FileAccess.ReadWrite))
            {
                foreach (System.IO.Packaging.PackageRelationship relationship in xlPackage.GetRelationshipsByType(documentRelationshipType))
                {
                    documentUri = PackUriHelper.ResolvePartUri(new Uri("/",
                      UriKind.Relative), relationship.TargetUri);
                    documentPart = xlPackage.GetPart(documentUri);
 
                    break;
                }
 
                if (documentPart != null)
                {
                    XmlDocument doc = new XmlDocument();
                    doc.Load(documentPart.GetStream());
 
                    XmlNamespaceManager nsManager =
                      new XmlNamespaceManager(doc.NameTable);
                    nsManager.AddNamespace("d", doc.DocumentElement.NamespaceURI);
 
                    string searchString = string.Format("//d:sheet[@name='{0}']", sheetName);
                    XmlNode sheetNode = doc.SelectSingleNode(searchString, nsManager);
                    if (sheetNode != null)
                    {
                        XmlAttribute relationAttribute = sheetNode.Attributes["r:id"];
                        if (relationAttribute != null)
                        {
                            string relId = relationAttribute.Value;
 
                            PackageRelationship sheetRelation = documentPart.GetRelationship(relId);
                            Uri sheetUri = PackUriHelper.ResolvePartUri(documentUri, sheetRelation.TargetUri);
                            PackagePart sheetPart = xlPackage.GetPart(sheetUri);
 
                           XmlDocument xDoc = new XmlDocument();
                            xDoc.Load(sheetPart.GetStream());
 
                            System.Text.RegularExpressions.Regex r =
                                new System.Text.RegularExpressions.Regex(@"^(?<col>\D+)(?<row>\d+)");
                            string rowNumber = r.Match(addressName).Result("${row}");
 
                            XmlNode cellnode = xDoc.SelectSingleNode(
                                string.Format("//d:sheetData/d:row/d:c[@r='{0}']", addressName),
                                    nsManager);
                            if (cellnode == null)
                            {
                                XmlElement cellElement = xDoc.CreateElement("c", worksheetSchema);
                                cellElement.Attributes.Append(xDoc.CreateAttribute("r"));
                                cellElement.Attributes["r"].Value = addressName;
 
                                XmlElement valueElement = xDoc.CreateElement("v", worksheetSchema);
                                valueElement.InnerText = value.ToString();
                                cellElement.AppendChild(valueElement);
 
                                cellElement.Attributes.Append(xDoc.CreateAttribute("s"));
                                cellElement.Attributes["s"].Value = "0";
 
                                XmlNode rowNode = xDoc.SelectSingleNode(string.Format(
                                    "//d:sheetData/d:row[@r='{0}']", rowNumber), nsManager);
                                if (rowNode == null)
                                {
                                    XmlNode sheetDataNode = xDoc.SelectSingleNode("//d:sheetData", nsManager);
                                    if (sheetDataNode != null)
                                    {
                                        XmlElement rowElement = xDoc.CreateElement("row", worksheetSchema);
                                        rowElement.Attributes.Append(xDoc.CreateAttribute("r"));
                                        rowElement.Attributes["r"].Value = rowNumber;
                                        rowElement.AppendChild(cellElement);
                                        sheetDataNode.AppendChild(rowElement);
                                        returnValue = true;
                                    }
                                }
                                else
                                {
                                    XmlAttribute styleAttr =
                                        ((XmlAttribute)(rowNode.Attributes.GetNamedItem("s")));
                                    if (styleAttr != null)
                                    {
                                        cellElement.Attributes["s"].Value = styleAttr.Value;
                                    }
 
                                    XmlNode biggerNode = null;
                                    XmlNodeList cellNodes = rowNode.SelectNodes("./d:c", nsManager);
                                    if (cellNodes != null)
                                    {
                                        foreach (XmlNode node in cellNodes)
                                        {
                                            if (String.Compare(node.Attributes["r"].Value, addressName) > 0)
                                            {
                                                biggerNode = node;
                                                break;
                                            }
                                        }
                                    }
                                    if (biggerNode == null)
                                    {
                                        rowNode.AppendChild(cellElement);
                                    }
                                    else
                                    {
                                        rowNode.InsertBefore(cellElement, biggerNode);
                                    }
                                    returnValue = true;
                                }
                            }
                            else
                            {
                                cellnode.Attributes.RemoveNamedItem("t");
                                XmlNode valueNode = cellnode.SelectSingleNode("d:v", nsManager);
                                if (valueNode == null)
                                {
                                    valueNode = xDoc.CreateElement("v", worksheetSchema);
                                    cellnode.AppendChild(valueNode);
                                }
                                valueNode.InnerText = value.ToString();
                                returnValue = true;
                            }
                            xDoc.Save(sheetPart.GetStream(FileMode.Create, FileAccess.Write));
                        }
                    }
                  }
            }
            return returnValue;
        }
 
        private bool XLInsertStringIntoCell(string fileName, string sheetName, string addressName, string value)
        {
            const string documentRelationshipType = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument";
            const string worksheetSchema = "http://schemas.openxmlformats.org/spreadsheetml/2006/main";
            const string sharedStringsRelationshipType = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings";
            const string sharedStringSchema = "http://schemas.openxmlformats.org/spreadsheetml/2006/main";
 
            PackagePart documentPart = null;
            Uri documentUri = null;
            bool returnValue = false;
 
            using (Package xlPackage = Package.Open(fileName, FileMode.Open, FileAccess.ReadWrite))
            {
                foreach (System.IO.Packaging.PackageRelationship relationship in xlPackage.GetRelationshipsByType(documentRelationshipType))
                {
                    documentUri = PackUriHelper.ResolvePartUri(new Uri("/", UriKind.Relative), relationship.TargetUri);
                    documentPart = xlPackage.GetPart(documentUri);
                    break;
                }
 
                if (documentPart != null)
                {
                    XmlDocument doc = new XmlDocument();
                    doc.Load(documentPart.GetStream());
 
                    NameTable nt = new NameTable();
                    XmlNamespaceManager nsManager = new XmlNamespaceManager(nt);
                    nsManager.AddNamespace("d", worksheetSchema);
                    nsManager.AddNamespace("s", sharedStringSchema);
 
                    string searchString = string.Format("//d:sheet[@name='{0}']", sheetName);
                    XmlNode sheetNode = doc.SelectSingleNode(searchString, nsManager);
                    if (sheetNode != null)
                    {
                        XmlAttribute relationAttribute = sheetNode.Attributes["r:id"];
                        if (relationAttribute != null)
                        {
                            string relId = relationAttribute.Value;
 
                            PackageRelationship sheetRelation = documentPart.GetRelationship(relId);
                            Uri sheetUri = PackUriHelper.ResolvePartUri(documentUri, sheetRelation.TargetUri);
                            PackagePart sheetPart = xlPackage.GetPart(sheetUri);
 
                            XmlDocument xDoc = new XmlDocument(nt);
                            xDoc.Load(sheetPart.GetStream());
 
                            foreach (System.IO.Packaging.PackageRelationship stringRelationship in documentPart.GetRelationshipsByType(sharedStringsRelationshipType))
                            {
                                Uri sharedStringsUri = PackUriHelper.ResolvePartUri(documentUri, stringRelationship.TargetUri);
                                PackagePart stringPart = xlPackage.GetPart(sharedStringsUri);
                                if (stringPart != null)
                                {
                                    XmlDocument stringDoc = new XmlDocument(nt);
                                    stringDoc.Load(stringPart.GetStream());
 
                                    int index = -1;
 
                                    XmlNode stringNode = stringDoc.SelectSingleNode(string.Format("//s:si[s:t='{0}']", value), nsManager);
                                    if (stringNode == null)
                                    {
                                        //  You didn't find the string in the table, so add it now.
                                        stringNode = stringDoc.CreateElement("si", sharedStringSchema);
                                        XmlElement textNode = stringDoc.CreateElement("t", sharedStringSchema);
                                        textNode.InnerText = value;
                                        stringNode.AppendChild(textNode);
                                        stringDoc.DocumentElement.AppendChild(stringNode);
                                    }
 
                                    if (stringNode != null)
                                    {
                                        XmlNodeList nodes = stringNode.SelectNodes("preceding-sibling::d:si", nsManager);
                                        index = nodes.Count;
 
                                        System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(@"^(?<col>\D+)(?<row>\d+)");
                                        string rowNumber = r.Match(addressName).Result("${row}");
 
                                        XmlNode cellNode = xDoc.SelectSingleNode(string.Format("//d:sheetData/d:row/d:c[@r='{0}']", addressName), nsManager);
                                        if (cellNode == null)
                                        {
                                            XmlElement cellElement = xDoc.CreateElement("c", worksheetSchema);
                                            cellElement.Attributes.Append(xDoc.CreateAttribute("r"));
                                            cellElement.Attributes["r"].Value = addressName;
 
                                            cellElement.Attributes.Append(xDoc.CreateAttribute("t"));
                                            cellElement.Attributes["t"].Value = "s";
 
                                            cellElement.Attributes.Append(xDoc.CreateAttribute("s"));
                                            cellElement.Attributes["s"].Value = "0";
 
                                            XmlElement valueElement = xDoc.CreateElement("v", worksheetSchema);
                                            valueElement.InnerText = index.ToString();
                                            cellElement.AppendChild(valueElement);
 
                                            XmlNode rowNode = xDoc.SelectSingleNode(string.Format("//d:sheetData/d:row[@r='{0}']", rowNumber), nsManager);
                                            if (rowNode == null)
                                            {
                                                XmlNode sheetDataNode = xDoc.SelectSingleNode("//d:sheetData", nsManager);
                                                if (sheetDataNode != null)
                                                {
                                                    XmlElement rowElement = xDoc.CreateElement("row", worksheetSchema);
                                                    rowElement.Attributes.Append(xDoc.CreateAttribute("r"));
                                                    rowElement.Attributes["r"].Value = rowNumber;
                                                    rowElement.AppendChild(cellElement);
                                                    sheetDataNode.AppendChild(rowElement);
                                                    returnValue = true;
                                                }
                                            }
                                            else
                                            {
                                                XmlAttribute styleAttr = ((XmlAttribute)(rowNode.Attributes.GetNamedItem("s")));
                                                if (styleAttr != null)
                                                {
                                                    cellElement.Attributes["s"].Value = styleAttr.Value;
                                                }
                                                XmlNode biggerNode = null;
                                                XmlNodeList cellNodes = rowNode.SelectNodes("./d:c", nsManager);
                                                if (cellNodes != null)
                                                {
                                                    foreach (XmlNode node in cellNodes)
                                                    {
                                                        if (String.Compare(node.Attributes["r"].Value, addressName) > 0)
                                                        {
                                                            biggerNode = node;
                                                            break;
                                                        }
                                                    }
                                                }
                                                if (biggerNode == null)
                                                {
                                                    rowNode.AppendChild(cellElement);
                                                }
                                                else
                                                {
                                                    rowNode.InsertBefore(cellElement, biggerNode);
                                                }
                                                returnValue = true;
                                            }
                                        }
                                        else
                                        {
                                            if (cellNode.Attributes["t"] == null)
                                            {
                                                cellNode.Attributes.Append(xDoc.CreateAttribute("t"));
                                            }
                                            cellNode.Attributes["t"].Value = "s";
                                            XmlNode valueNode = cellNode.SelectSingleNode("d:v", nsManager);
                                            if (valueNode == null)
                                            {
                                                valueNode = xDoc.CreateElement("v", worksheetSchema);
                                                cellNode.AppendChild(valueNode);
                                            }
                                            valueNode.InnerText = index.ToString();
                                            returnValue = true;
                                        }
 
                                        stringDoc.Save(stringPart.GetStream(FileMode.Create, FileAccess.Write));
 
                                        xDoc.Save(sheetPart.GetStream(FileMode.Create, FileAccess.Write));
                                    }
                                }
                                break;
                            }
                        }
                    }
                }
            }
            return returnValue;
        }

**guintolli** · 22/07/2008, 08h59

A ouai les fonctions sont quand même balaises...

Je pensais que c'était beaucoup plus simple que cela.

**guintolli** · 22/07/2008, 10h30

J'avais trouvé ce tutoriel:
http://stephaneey.developpez.com/tut...ervices/#LIV-A

Mais comme un boulet, je n'arrivais pas à utiliser la classe ExcelService à cause de l'oubli d'ajout de la référence web.

code pour écrire dans un fichier excel

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