Do you want to import csv or excel (xls, xlsx) file in MongoDB? You can read the file, get the data in C# datatable and save it to MongoDB using InsertBatch method. This article explains how to save C# DataTable to MongoDB for inserting a large amount of data.
To install Official .NET driver for MongoDB, run the following command in the Package Manager Console
Install-Package MongoDB.Driver
In your application configuration file, add mongodb connectionstring
<add key="mongoConnection" value="mongodb://localhost" />
Now use following method:
public async Task SaveDataTableToCollection(DataTable dt)
{
var connectionString = ConfigurationManager.AppSettings["mongoConnection"];
var client = new MongoClient(connectionString);
var database = client.GetDatabase("myMongoDatabaseName");
var collection = database.GetCollection<BsonDocument>("MyCollection");
List<BsonDocument> batch = new List<BsonDocument>();
foreach (DataRow dr in dt.Rows)
{
var dictionary = dr.Table.Columns.Cast<DataColumn>().ToDictionary(col => col.ColumnName, col => dr[col.ColumnName]);
batch.Add(new BsonDocument(dictionary));
}
await collection.InsertManyAsync(batch.AsEnumerable());
}
You can call the above method and pass the datatable to save in MongoDB. To get DataTable from CSV/excel file, read following posts:
Upload and Read CSV File in ASP.NET MVC
Upload and Read Excel File (.xls, .xlsx) in ASP.NET MVC
Hope it helps.
i tried above code, with passing the datatable, I do not see it inserts any rows I have in datatable to MongoDB
here is the code:
public void readSQLDataforImport()
{
DataTable sourceTable = SqlReadDB(connectionString, TSQL);
SaveDataTableToCollection(sourceTable);
}
public async void SaveDataTableToCollection(DataTable dt)
{
var client = new MongoClient(“mongodb://mongodbserver:27017”);
var database = client.GetDatabase(“CentralCollection”);
var collection = database.GetCollection(“Emailrecipients”);
collection.WithWriteConcern(WriteConcern.Acknowledged);
List batch = new List();
foreach (DataRow dr in dt.Rows)
{
var dictionary = dr.Table.Columns.Cast().ToDictionary(col => col.ColumnName, col => dr[col.ColumnName]);
batch.Add(new BsonDocument(dictionary));
}
await collection.InsertManyAsync(batch.AsEnumerable());
}