Display Graph From Excel Spreadsheet?

Jun 10, 2010

I'm working on a project which requires me to plot a graph using Visual Studio ASP.Net from a data I've collected either in .txt or .xml format. The data consist of, eg. 15 records, but I'm only needed to plot 8 graphs out of the 15 records.

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[code]....

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[Code]....

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Code:
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Code:
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[code]...

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[Code].....

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public static void Convert(DataSet ds, HttpResponse response)
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}
catch (Exception ex)
{
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}
}

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My web app is allowing the user to load a column of data from an Excel spreadsheet. For whatever reason, as it parses the data, fields that are just integers are coming up as System.DBNull. (Code in VB.NET but I work with C# as well, so feel free to post C# solutions)

[Code]....

dataRow(0) is System.DBNull when the Excel file has a number in Column A. Here's what the Excel looks like

Column A
100S200
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ABCDEFG
123456
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123456 and 119655902 come through as DBNull

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c:Program FilesMicrosoft Visual Studio 8SDKv2.0QuickStartaspnetsamplesdataapp_data orthwind.mdb

[Code]....

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However i have error whenever i want to view the graphs.. I have upload my code in the attachment. Pls take a look. I do the coding invb.

[code]....

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