CODEWITHSUNDEEP
c#dictionary
User9123
User9123

Reputation: 45

C# converting from object

I have a Dictionary which is filled with Lists each list represents a Datacolumn in my Datatable. I am trying to iterate through a specific list in the dictionary but i get an error when trying to append i, stating I cannot convert from object to double.

Dictionary<string, Dictionary<string, List<object>>> dict;

I add to the dictionary by;

dict = dt.Columns.Cast<DataColumn>().ToDictionary(c => c.ColumnName, c => dt.AsEnumerable().Select(r => r[c]).ToList());

Where the error happens;

XyDataSeries<double,double> xyseries;

private void chkbx1_Checked(object sender, RoutedEventArgs e)
{
    var list = dict["ColumnName1"];

    foreach (var i in list)
    {
        Convert.ToDouble(i);
        xyseries.Append(one++, i);
    }

}

Upvotes: 0

Views: 106

Answers (1)

InBetween
InBetween

Reputation: 32740

Your problem is here: Convert.ToDouble(i);

ToDouble returns a double, it doesn't change i into a double. You need to do the following:

foreach (var i in list)
{
    var d = Convert.ToDouble(i);
    xyseries.Append(one++, d);
}

Upvotes: 4

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