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Inserting extra data in a linq result but not to the data source or waiting for submiting changes on a context object

由 你。 提交于 2020-01-15 06:32:13
问题 When I had a Typed DataTable with information retrieved from a SQL Server with a table adapter, I'm able to insert temporary data into that DataTable which I just want to use on execution time, and I don't want it to be inserted into the database. First supose that for example I have a Database table like this: CREATE TABLE MyData ( MyCol1 int, MyCol2 nchar(10) ) So using SqlClient objects this is what I do. MyTypedDataSet.MyTypedDataTable myDataTable = new MyTypedDataSet.MyTypedDataTable();

Insert new row in data table VBA Excel2010 ActiveX

由 ぃ、小莉子 提交于 2019-12-12 03:28:50
问题 I want to insert a row in my data table. When I try it manually (select row, insert new row) it works just fine, but when I try to add it into my macro, which is inside an ActiveX button(!) it says "Runtime error 438: Object does not suppoort this method". If I try the mecro in a usual macro, not inside the button, it works fine aswell. How can I get rid of this problem? Set wsd = Sheets("Data") wsd.Select With wsd .Rows("5:5").Select .Selection.Insert Shift:=xlDown, CopyOrigin:

inserting data from datagridview to database

由 倖福魔咒の 提交于 2019-12-09 23:34:12
问题 There are some existing data in the database and users will be entering new data into the datagridview which I wanted to add into database. And I really don't know how to add ONLY the new inserted rows of data in datagridview into the database. How do I get the new inserted data only? I was told that I can use tempID to assign it to the new inserted row, but I have no idea on how to do it. Can anyone give me some links to it? This is my code for now: private void button1_Click(object sender,

inserting data from datagridview to database

由 淺唱寂寞╮ 提交于 2019-12-04 19:06:47
There are some existing data in the database and users will be entering new data into the datagridview which I wanted to add into database. And I really don't know how to add ONLY the new inserted rows of data in datagridview into the database. How do I get the new inserted data only? I was told that I can use tempID to assign it to the new inserted row, but I have no idea on how to do it. Can anyone give me some links to it? This is my code for now: private void button1_Click(object sender, EventArgs e) { con = new System.Data.SqlClient.SqlConnection(); con.ConnectionString = "Data Source=tcp
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