ADO.NET :: Getting SQL Duplicate Key Exception With No Duplicate Key?

Jan 20, 2011

Regarding Linq to SQL with .SQLEXPRESS and VS2010 on Windows 7, I am trying to add a list of entries to an empty table that I have confirmed programmatically does not have duplicate keys. Some info about the situation:Note: The key strings have Unicode characters (English and Chinese mixed).

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I used the following query to load in duplicate records:

SELECT * FROM TableA WHERE ([ControlA] IN (SELECT [ControlA] FROM TableA GROUP BY [ControlA] HAVING (COUNT [ControlA]) > 1)))

ID ControlA PIN# FaceValue Date
delete 76637 128232 1234 5 6/4/2006
delete 72722 128232 1234 5 6/4/2006
delete 76638 234567 2345 10 7/3/2006
delete 72723 234567 2345 10 7/3/2006

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<asp:TableHeaderRow CssClass="lblrow2" HorizontalAlign="Left" BackColor="AliceBlue">
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protected void Button1_Click(object sender, System.EventArgs e)
{
// Total number of rows.
int rowCnt;
// Current row count.
int rowCtr;
// Total number of cells per row (columns).
int cellCtr;
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int cellCnt;
rowCnt = int.Parse(TextBox1.Text);
cellCnt = int.Parse(TextBox2.Text);
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for (cellCtr = 1; cellCtr <= cellCnt; cellCtr++)
{
// Create a new cell and add it to the row.
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tRow.Cells.Add(tCell);
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}
}

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Dec 14, 2010

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Sub CheckForDuplicateRec()
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TABLE2
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UPDATE:

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I have a program that parser html and collecting urls. The problem is when checking for duplicates before I add them to an arraylist is that I cannot distinguish between types of the following format:

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I have an ASP:Table that has one row in by default. I would like to give the user the ability to, by clicking a button, add the same row again to enable more data entry. The end result being that I can commit the data in the rows to a SQL database.

My Table Code

<asp:Table ID="Table1" runat="server" Height="50%" Width="100%">
<asp:TableHeaderRow CssClass="lblrow2" HorizontalAlign="Left" BackColor="AliceBlue">
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[Code]....

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[Code]....

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