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POHow do I remove a datatable from a dataset (has a bunch of relationships)
 

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  1. POHow do I remove a datatable from a dataset (has a bunch of relationships)
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    <p>I am attempting to remove a datatable that was loaded into a dataset, and has been related. Here is the code I attempted.</p> <pre><code>domain.EnforceConstraints = false; if (domain.Tables["TABLE_NAME"] != null) { domain.Tables["TABLE_NAME"].ChildRelations.Clear(); domain.Tables["TABLE_NAME"].ParentRelations.Clear(); domain.Tables.Remove("TABLE_NAME"); } domain.EnforceConstraints = true; </code></pre> <p>This throws an exception at the point of removing the table, due to a foreign-key constraint existing. Unfortunately, the way the logic is I have no idea what the name of the constraint is [so I cannot hard code it].</p> <p>Is there away to accomplish this in an easier fashion, or can I get some suggestions as to how to locate and remove the constraint that is causing my issue.</p> <p>Thanks in advance, Steve</p> <p>--------------------------ANSWER------------------------</p> <p>I wasn't allowed to answer my own question so here is the solution I came up with. This code snippet now works for me. I had to travel the relation to the other table and remove the constraint from there.</p> <pre><code> if (domain.Tables["TABLE_NAME"] != null) { for (int f = domain.Tables["TABLE_NAME"].ChildRelations.Count -1; f &gt;=0; f--) { domain.Tables["TABLE_NAME"].ChildRelations[f].ChildTable.Constraints.Remove(domain.Tables["TABLE_NAME"].ChildRelations[f].RelationName); domain.Tables["TABLE_NAME"].ChildRelations.RemoveAt(f); } domain.Tables["TABLE_NAME"].ChildRelations.Clear(); domain.Tables["TABLE_NAME"].ParentRelations.Clear(); domain.Tables["TABLE_NAME"].Constraints.Clear(); domain.Tables.Remove("TABLE_NAME"); } </code></pre>
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    1. COdomain is a dataset (of type System.Data.Dataset) but yes, the data was originally loaded from SQL SERVER 2005
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    2. CO@Chris he is working in memory with ADO.NET objects, database engine is not relevant in this context.
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    3. COI found I didn't need to do the three lines domain.Tables["TABLE_NAME"].ChildRelations.Clear(); domain.Tables["TABLE_NAME"].ParentRelations.Clear(); domain.Tables["TABLE_NAME"].Constraints.Clear();
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