How to import XML data in c#

Hi if you want to insert a XML text in SQL 2000 you can see this link[^]

but if you want to send a XML text to SQL by C#, this work is very easy:
Multiple CDATA elements are not consistantly supported across implementations. For example, you will have problems accessing them an XDocument or via SelectNodes. If you can change the input format that would make things easier.

This code hasn't been tested and there's no error handling or bad data checking, but it should get you started. Investigate using XPathDocument / XPathNavigator for performance and read my inline comments.

class XmlCsvImport
{
    public void ImportData(string xmlData, ConnectionStringSettings connectionSettings)
    {
        DbProviderFactory providerFactory = DbProviderFactories.GetFactory(connectionSettings.ProviderName);

        IDbConnection connection = providerFactory.CreateConnection();
        connection.ConnectionString = connectionSettings.ConnectionString;

        // TODO: Begin transaction

        XmlDocument doc = new XmlDocument();
        doc.LoadXml(xmlData);

        foreach (XmlNode tableNode in doc.SelectNodes("/transaction/table"))
        {
            IDbCommand command = CreatCommand(connection, tableNode);

            foreach (XmlNode rowNode in tableNode.SelectNodes("data/row"))
            {
                string[] values = GetRowValues(rowNode);

                if (values.Length != command.Parameters.Count)
                {
                    // TODO: Log bad row
                    continue;
                }

                this.FillCommand(command, values);
                command.ExecuteNonQuery();
            }
        }

        // TODO: Commit transaction
    }

    private IDbCommand CreatCommand(IDbConnection connection, XmlNode tableNode)
    {
        string tableName = tableNode.Attributes["name"].Value;

        IDbCommand command = connection.CreateCommand();
        command.Connection = connection;
        command.CommandType = CommandType.Text;

        XmlNodeList fieldNodes = tableNode.SelectNodes("fields/field");

        List<string> fieldNameList = new List<string>(fieldNodes.Count);

        foreach (XmlNode fieldNode in tableNode.SelectNodes("fields/field"))
        {
            string fieldName = fieldNode.Attributes["name"].Value;
            int fieldType = Int32.Parse(fieldNode.Attributes["type"].Value);
            int fieldSize = Int32.Parse(fieldNode.Attributes["size"].Value);

            IDbDataParameter param = command.CreateParameter();
            param.ParameterName = String.Concat("@", fieldNode.Attributes["name"]);
            param.Size = fieldSize;
            param.DbType = (DbType)fieldType; // NOTE: this may not be so easy
            command.Parameters.Add(param);

            fieldNameList.Add(fieldName);
        }

        string[] fieldNames = fieldNameList.ToArray();

        StringBuilder commandBuilder = new StringBuilder();
        commandBuilder.AppendFormat("INSERT INTO [{0}] (", tableName);

        string columnNames = String.Join("], [", fieldNames);
        string paramNames = String.Join(", @", fieldNames);

        command.CommandText = String.Concat(
            "INSERT INTO [", tableName, "] ([",
            columnNames,
            "]) VALUES (@",
            paramNames,
            ")"
            );

        return command;
    }

    private string[] GetRowValues(XmlNode row)
    {
        List<string> values = new List<string>();

        foreach (XmlNode child in row.ChildNodes)
        {
            if (child.NodeType == XmlNodeType.Text ||
                child.NodeType == XmlNodeType.CDATA)
            {
                values.Add(child.Value);
            }
        }

        return values.ToArray();
    }

    private void FillCommand(IDbCommand command, string[] values)
    {
        for (int i = 0; i < values.Length; i++)
        {
            IDbDataParameter param = (IDbDataParameter)command.Parameters[i];
            param.Value = values[i]; // TODO: Convert to correct data type
        }
    }
</string></string></string></string>