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    <p>if you're using Entity Framework, not LINQ to SQL, there is wonderful Entity Sql and you can use it as</p> <pre><code>object DynamicQuery(string fieldName, object fieldValue) { string eSql=string.Format("it.{0} = @param", fieldName); return db.Where(eSql, fieldValue).FirstOrDefault(); } </code></pre> <p>hope this helps</p> <p>MSDN has the following example, you see that you can dynamicly change strings used to access ProductID field, and as far as i remember event rename it.</p> <pre><code>using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities()) { try { // Use the Select method to define the projection. ObjectQuery&lt;DbDataRecord&gt; query = advWorksContext.Product.Select("it.ProductID, it.Name"); // Iterate through the collection of data rows. foreach (DbDataRecord rec in query) { Console.WriteLine("ID {0}; Name {1}", rec[0], rec[1]); } } catch (EntitySqlException ex) { Console.WriteLine(ex.ToString()); } } </code></pre> <p>Also you can even do the following (again from MSDN)</p> <pre><code>using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities()) { string myQuery = @"SELECT p.ProductID, p.Name FROM AdventureWorksEntities.Product as p"; try { foreach (DbDataRecord rec in new ObjectQuery&lt;DbDataRecord&gt;(myQuery, advWorksContext)) { Console.WriteLine("ID {0}; Name {1}", rec[0], rec[1]); } } catch (EntityException ex) { Console.WriteLine(ex.ToString()); } catch (InvalidOperationException ex) { Console.WriteLine(ex.ToString()); } } </code></pre>
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    1. POHow to choose programaticaly the column to be queried by Linq using PropertyInfo?
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    1. USvittore
    1. USvittore
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    1. CO@vitore-- fieldValue is declared but never used. obj is not declared. What's this expression "it.{0} = @param" means?
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    2. CO@Richard77 - I fixed the code, in Where should be fieldValue not obj. `it.Field = @param` - is condition expressed in Entity SQL means the same as `where field = @param` - if you will use sql with params. I used string.Format because i do not like to use string operations like `"it."+fieldName+"=@param"`
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    3. CO@Vitore- much better. So, how do I retrieve the value? var myvar = the expression you wrote? -- var myvar = object DynamicQuery(String fieldName, etc..)?
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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