Insert ADO.Net DataTable into an SQL table - asp.net

Question

The current solution i implemented is awful!
I use a for... loop for inserting records from an ADO.NET data-table into an SQL table.
I would like to insert at once the data-table into the SQL table, without iterating...
Is that possible, or am i asking too much?

Answer 1

You can pass the entire DataTable as a single Table Valued Parameter and insert the entire TVP at once. The following is the example from Table-Valued Parameters in SQL Server 2008 (ADO.NET):
// Assumes connection is an open SqlConnection.
using (connection)
{
// Create a DataTable with the modified rows.
DataTable addedCategories = CategoriesDataTable.GetChanges(
DataRowState.Added);
// Define the INSERT-SELECT statement.
string sqlInsert =
"INSERT INTO dbo.Categories (CategoryID, CategoryName)"
+ " SELECT nc.CategoryID, nc.CategoryName"
+ " FROM #tvpNewCategories AS nc;"
// Configure the command and parameter.
SqlCommand insertCommand = new SqlCommand(
sqlInsert, connection);
SqlParameter tvpParam = insertCommand.Parameters.AddWithValue(
"#tvpNewCategories", addedCategories);
tvpParam.SqlDbType = SqlDbType.Structured;
tvpParam.TypeName = "dbo.CategoryTableType";
// Execute the command.
insertCommand.ExecuteNonQuery();
}
TVP are only available in SQL 2008.

Answer 2

I think you are looking for SQLBulkCopy.

Answer 3

SqlBulkCopy is the simplest solution.
using (SqlConnection dbConn = new SqlConnection(connectionString))
{
dbConn.Open();
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(dbConn))
{
bulkCopy.DestinationTableName =
"dbo.MyTable";
try
{
bulkCopy.WriteToServer(myDataTable, DataRowState.Added);
}
catch (Exception ex)
{
myLogger.Error("Fail to upload session data. ", ex);
}
}
}
You can create SqlBulkCopyColumnMapping if the columns in your DataTable don't match your database table.

Answer 4

You can also try the following method.
private void button1_Click(object sender, EventArgs e)
{
tabevent();
DataSet ds = new DataSet();
DataTable table = new DataTable("DataFromDGV");
ds.Tables.Add(table);
foreach (DataGridViewColumn col in dataGridView1.Columns)
table.Columns.Add(col.HeaderText, typeof(string));
foreach (DataGridViewRow row in dataGridView1.Rows)
{
table.Rows.Add(row);
foreach (DataGridViewCell cell in row.Cells)
{
table.Rows[row.Index][cell.ColumnIndex] = cell.Value;
}
}
// DataTable ds1changes = ds1.Tables[0].GetChanges();
if (table != null)
{
SqlConnection dbConn = new SqlConnection(#"Data Source=wsswe;Initial Catalog=vb;User ID=sa;Password=12345");
SqlCommand dbCommand = new SqlCommand();
dbCommand.Connection = dbConn;
foreach (DataRow row in table.Rows)
{
if (row["quantity"] != null && row["amount"]!=null && row["itemname"]!=null)
{
if (row["amount"].ToString() != string.Empty)
{
dbCommand.CommandText =
"INSERT INTO Bill" +
"(Itemname,Participants,rate,Quantity,Amount)" +
"SELECT '" + Convert.ToString(row["itemname"]) + "' AS Itemname,'" + Convert.ToString(row["Partcipants"]) + "' AS Participants,'" + Convert.ToInt32(row["rate"]) + "' AS rate,'" +
Convert.ToInt32(row["quantity"]) + "' AS Quantity,'" + Convert.ToInt32(row["amount"]) + "' AS Amount";
dbCommand.Connection.Open();
dbCommand.ExecuteNonQuery();
if (dbCommand.Connection.State != ConnectionState.Closed)
{
dbCommand.Connection.Close();
}
MessageBox.Show("inserted");
}
}
}
}
}