Dbdataadapter. update command

Using it from another, it works fine. So I'm really stumped. I have even compared the SqlAdapter. CommandText from the two and they are exactly the same as are the ItemArray data elements.

RowStates are also the same. Add a comment. Active Oldest Votes. GetDeleteCommand true ; dataAdapt. GetUpdateCommand true ; dataAdapt. GetInsertCommand true ;. Improve this answer. Daniel Santos Daniel Santos 1, 14 14 silver badges 38 38 bronze badges. Thanks for this. Documentation — nicV. Tom Studee Tom Studee 10k 3 3 gold badges 36 36 silver badges 41 41 bronze badges. Where would I put that? Try the below source.

AddRow daRow ; daRow. Text; daRow. SetModified ; if MessageBox. That's exactly what was needed thank you for the reminder. You might need DataAdapeter. DataAdapter does not have a AcepptChanges method. Actually, if you call that method, say from a DataSet before calling the the DataAdapter. Update method, you will set all row states as Unchanged and prevent DataAdapter. Cerveser Cerveser 8 8 silver badges 22 22 bronze badges.

Add daRow ; dataAdapt. Muniba 3 2 2 bronze badges. Muniba Muniba 1. Jess Jess 78 1 1 silver badge 8 8 bronze badges. In "Copy to Output Directory" property set the value "Copy if newer" and you are good to go. Muhammad Haroon Muhammad Haroon 1 1 gold badge 5 5 silver badges 20 20 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Email Required, but never shown. The Overflow Blog. Follow Post Reply. I think I figured this out because I finally got it to work. What I did was to assign a datarow object to the row I wanted to update and Parameters to the UpdateCommand and modified the commandtext to use parameters. Then I updated the items in the datarow that I wanted to change. Then I updated the datatable.

Now I can see the update in tblx datatable tbl1 sql server table. Fill tblx da. Int, 4, "ID" da. But when I was trying to use the Adapter - I was not updating tblx which is what updates tbl1 on the sql server. Now I can see the update in the client app as well as the sql server. Cor Ligthert [MVP]. Rich, Your update command is incomplete, with a dataadapter you normally test if there is no problem with the optimistic concurrency.

It is done using the SQL command. Have a look at this most simple sample on our website. All the insert, update and delete handling for a table are made dynamicly while using the dataadapter after doing this command. Hi Cor, Thank you for your reply. I looked at your website, but I came up with another method using dataRow. BeginEdit and dataRow. The UpdateCommand on my DataAdapter seems to work now. One of my goals for using the DataAdpater is specifically for checking for optimistic concurrency.

May I ask how this is done? I admit that I had a little bit of trouble following the example on your site due to my lack of experience. Thanks, Rich "Cor Ligthert [MVP]" wrote: Rich, Your update command is incomplete, with a dataadapter you normally test if there is no problem with the optimistic concurrency. Rich, I have seen those messages about the commandbuilder as well. I have seen too, that some of those who wrote that in past are now advising the commandbuilder.

In my idea is there nothing wrong with the commandbuilder for simple updates of one table. Like the designer it can only use one not joined table with a primary key and hold a maximum of fields. I have never seen in this newsgroups or by myself a real wrong behaviour of the commandbuilder. When you use the Delete method, the row remains in the DataTable and is marked for deletion.

If you then pass the DataTable or DataSet to a DataAdapter and call Update , the corresponding row in the back end data source is deleted. For more information, see Generating Commands with CommandBuilders. You can control how the values returned from the data source are mapped back to the DataTable following a call to the Update method of a DataAdapter , by using the UpdatedRowSource property of a DbCommand object.

By setting the UpdatedRowSource property to one of the UpdateRowSource enumeration values, you can control whether output parameters returned by the DataAdapter commands are ignored or applied to the changed row in the DataSet. You can also specify whether the first returned row if it exists is applied to the changed row in the DataTable. The following table describes the different values of the UpdateRowSource enumeration and how they affect the behavior of a command used with a DataAdapter.

The Update method resolves your changes back to the data source; however other clients may have modified data at the data source since the last time you filled the DataSet. New rows will be added to the table, and updated information will be incorporated into existing rows. The Fill method determines whether a new row will be added or an existing row will be updated by examining the primary key values of the rows in the DataSet and the rows returned by the SelectCommand.

If the Fill method encounters a primary key value for a row in the DataSet that matches a primary key value from a row in the results returned by the SelectCommand , it updates the existing row with the information from the row returned by the SelectCommand and sets the RowState of the existing row to Unchanged. If a row returned by the SelectCommand has a primary key value that does not match any of the primary key values of the rows in the DataSet , the Fill method adds a new row with a RowState of Unchanged.

You must define the PrimaryKey yourself to ensure that duplicate rows are resolved correctly. For more information, see Defining Primary Keys. To handle exceptions that may occur when calling the Update method, you can use the RowUpdated event to respond to row update errors as they occur see Handling DataAdapter Events , or you can set DataAdapter. ContinueUpdateOnError to true before calling Update , and respond to the error information stored in the RowError property of a particular row when the update is complete see Row Error Information.

If the field values that identify the row as unique have been modified, after calling AcceptChanges the Original values will no longer match the values in the data source. AcceptChanges is called automatically for each row during a call to the Update method of a DataAdapter. You can preserve the original values during a call to the Update method by first setting the AcceptChangesDuringUpdate property of the DataAdapter to false, or by creating an event handler for the RowUpdated event and setting the Status to SkipCurrentRow.

The following examples demonstrate how to perform updates to modified rows by explicitly setting the UpdateCommand of a DataAdapter and calling its Update method. This is important, because the Current value may have been modified and may not match the value in the data source. The Original value is the value that was used to populate the DataTable from the data source.