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copied!<p>I agree that it looks like you are adding the same Control over and over which causes a naming conflict. It also looks like you may be adding controls to other controls' Controls collections in the wrong order. For example, you are adding in this order:</p> <pre><code>TableHeaderRow h = new TableHeaderRow(); TableHeaderCell hc1 = new TableHeaderCell(); hc1.Text = "Item Description"; h.Cells.Add(hc1); TableHeaderCell hc2 = new TableHeaderCell(); hc2.Text = "Item Price"; h.Cells.Add(hc2); TableHeaderCell hc3 = new TableHeaderCell(); hc3.Text = "Item Quantity"; h.Cells.Add(hc3); TableHeaderCell hc4 = new TableHeaderCell(); hc4.Text = "Item Sub Total"; h.Cells.Add(hc4); Table1.Rows.Add(h); </code></pre> <p>When you should really be adding in this order:</p> <pre><code>TableHeaderRow h = new TableHeaderRow(); Table1.Rows.Add(h); TableHeaderCell hc1 = new TableHeaderCell(); h.Cells.Add(hc1); hc1.Text = "Item Description"; TableHeaderCell hc2 = new TableHeaderCell(); h.Cells.Add(hc2); hc2.Text = "Item Price"; TableHeaderCell hc3 = new TableHeaderCell(); h.Cells.Add(hc3); hc3.Text = "Item Quantity"; TableHeaderCell hc4 = new TableHeaderCell(); h.Cells.Add(hc4); hc4.Text = "Item Sub Total"; </code></pre> <p>As a rule, I always try to add a new control to the parent Controls collection as soon as possible to ensure that any child controls inherit the correct UniqueID. If you create a new Control X and start adding to X.Controls BEFORE adding X to the parent Controls collection then the child controls may not inherit the right UniqueID.</p>

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