Get column names from excel file of a specific sheet using c# with OleDbConnection

问题

So far I have managed to get the column names of the whole excel file, but what I would like to do is to get the column names of the excel file of a given table (sheet). How could I modify the code to achieve this. I have been trying for a while now with no positive results, any help much appreciated.

public static List<String> ReadSpecificTableColumns(string filePath, string sheetName)
    {
        var columnList = new List<string>();
        try
        {
            var excelConnection = new OleDbConnection("provider=Microsoft.ACE.OLEDB.12.0;Data Source='" + filePath + "';Extended Properties='Excel 12.0;IMEX=1'");
            excelConnection.Open();
            var columns = excelConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, null);
            excelConnection.Close();

            if (columns != null)
            {
                columnList.AddRange(from DataRow column in columns.Rows select column["Column_name"].ToString());
            }

        }
        catch (Exception exception)
        {
            Console.WriteLine(exception.Message);
        }

        return columnList;
    }

回答1:

You did not include sheet name in your code.
You can try below code:

var adapter = new OleDbDataAdapter("SELECT * FROM [" +sheetName + "$]", excelConnection);
var ds = new DataSet();
adapter.Fill(ds, "myTable");
DataTable data = ds.Tables["myTable"];

foreach(DataColumn  dc in data.Columns){
...
}

回答2:

You can do something like this:

    private void ValidateExcelColumns(string filePath)
    {            
        var connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=\"Excel 12.0;IMEX=1;HDR=Yes;TypeGuessRows=0;ImportMixedTypes=Text\""; ;
        using (var conn = new OleDbConnection(connectionString))
        {
            conn.Open();

            DataTable dt = new DataTable();
            var sheets = conn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });
            using (var cmd = conn.CreateCommand())
            {
                cmd.CommandText = "SELECT TOP 1 * FROM [" + sheets.Rows[0]["TABLE_NAME"].ToString() + "] ";
                var adapter = new OleDbDataAdapter(cmd);
                adapter.Fill(dt);
            }

            foreach(DataColumn column in dt.Columns)
            {
                //Do something with your columns
            }
        }
    }

来源：https://stackoverflow.com/questions/26295737/get-column-names-from-excel-file-of-a-specific-sheet-using-c-sharp-with-oledbcon

标签

excel

oledb

oledbconnection