ADO.NET :: Manually Update Entity Object In .edmx To Reflect A New Column In The DB?
Oct 11, 2010
Is there a way to manually update a single edmx entity to reflect a new column in a SQL db table? If yes, what would be the proper step- by-step procedure?
I prefer not to use the "update model from db" template because this will update all the tables and wipe out all the customizations and name changes I have already made in the EF objects. This seems a bit overkill for a single column change. I went down this route once, and I prefer not to do it again. I do not see any way to actually update a single table from the DB using VS2010 "update from db".
What I have tried to do so far is manually add a new scalar property to the appropriate entity using the edmx designer, and this seems to work OK, but I cannot seem to find a way to map the new property back to the db through the mapping window. Do I have to do this directly through the XML file? Also is this sufficient to ensure the new column is correctly reflected in the edmx, or are there other steps that need to be done?
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I'm pulling all the objects from an entity in my database
Dim dbConfig as New housingEntities
Dim update_query = (From p in dbConfig.Configs _
Select p)
Then, I want to individually access the rows and perform updates to them...For example, if I just needed the first row I could go like this:
update_query.First.timeValue = txtFRRSD.Text
dbConfig.SubmitChanges()
Now, I don't know how to code this, but here is pseudo what I'd like to do:
update_query.Item("FRRSD").timeValue = txtFRRSD.Text
update_query.Item("FRRCD").timeValue = txtFRRCD.Text
update_query.Item("SORSD").timeValue = txtSORSD.Text
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Feb 13, 2011
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[Code]....
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_ObjBeforTostring.Add("*************Befor Object**********");
_ObjBeforTostring.Add("");
foreach (PropertyInfo pf in _PropertyInfo)
{
if (_objbefor != null)
{
string _str = pf.GetValue(_objbefor, null).ToString();
_ObjBeforTostring.Add(pf.Name.ToString() + " :: ( " + _str + " )");
_ObjBeforTostring.Add("==============================");
}
}
_ObjBeforTostring.Add("");
_ObjBeforTostring.Add("*************After Object**********");
_ObjBeforTostring.Add("");
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{
if (_objAfter != null)
{
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runat="server"
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[Code]....
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I see this new option in asp.net 4.0 to access database objects.
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[code].....
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