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DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000 - basic.visualThis is a discussion on DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000 - basic.visual ; A datagrid, dgrCaseSiteInput, could contain asfew rows as 1. Several of the columns are for entry. A cmd button successfully executes a stored procedure to update the database based on those entries. Problem: I don'tknow how to update ...

DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000

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08-05-2005 07:53 PM

DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000A datagrid, dgrCaseSiteInput, could contain as few rows as 1. Several of

the columns are for entry.

A cmd button successfully executes a stored procedure to update the databasebased on those entries.

Problem:I don't know how to update the table after the user changes a value in anentry column.

I don't want to have to depend on the user clicking another record indgrCaseSiteInput to update the source table.This goal is an attempt to simplify the user interface, and to allow for thepossibility that dgrCaseSiteInput might contain only 1 row.

Can someone tell me- which Event(s) to use to trap a change, and- what method to use to write the change to the database ...rsCaseSiteFetch.UpdateBatch adAffectAll ?

I populate dgrCaseSiteInput using code at the bottom.

Thank you for any help.

Larry Mehl

---------------------------------------------------Dim conn As New ADODB.ConnectionDim rsCaseSiteFetch As New ADODB.RecordsetDim strSQLCaseSiteFetch As StringDim strCaseID As String

Set conn = New ADODB.ConnectionSet rsCaseSiteFetch = New ADODB.Recordset

conn.CursorLocation = adUseClient

conn.Open "PROVIDER=MSDASQL;dsn=Provisioning;uid=;pwd=;"

strCaseID = frmMain.txtCaseID.Text

strSQLCaseSiteFetch = _"SELECT CaseID_s, SiteID_s, HeadEndCount_s, STXInstalledYN_s, " & _"SiteIDParentSvr_s, SiteIDParentSTX_s, HubCount_s, " & _"HHPassedPerNode_s, " & _"SubsDigCount_s , Nodes_Site_s, " & _"SubsDigCountMfr_s, " & _"PSUAgg_Svr_s, PSUAgg_STX_s " & _"FROM CaseSite " & _"WHERE CaseID_s = '" & strCaseID & "'"

rsCaseSiteFetch.Open _strSQLCaseSiteFetch, _conn, adOpenStatic, adLockOptimistic

Set dgrCaseSiteInput.DataSource = rsCaseSiteFetch

#1

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Nov 20090

Application Development Junior Member

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08-05-2005 10:18 PM

Re: DataGrid - how detect a change in any field in 1 row, and thenupdate table? VB6, SQL 2000L Mehl wrote:

#2

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DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000 2015/05/25

http://objectmix.com/basic-visual/155832-datagrid-how-detect-change-any-field-1-row-then-update-table-vb6-sql-2000-a.html 1 / 6

> A datagrid, dgrCaseSiteInput, could contain as few rows as 1. Several of> the columns are for entry.>> A cmd button successfully executes a stored procedure to update the database> based on those entries.>> Problem:> I don't know how to update the table after the user changes a value in an> entry column.>> I don't want to have to depend on the user clicking another record in> dgrCaseSiteInput to update the source table.> This goal is an attempt to simplify the user interface, and to allow for the> possibility that dgrCaseSiteInput might contain only 1 row.>> Can someone tell me> - which Event(s) to use to trap a change, and

Keypressed() would seem to be the best bet...

> - what method to use to write the change to the database ...> rsCaseSiteFetch.UpdateBatch adAffectAll ?>> I populate dgrCaseSiteInput using code at the bottom.

Ooh, Ick, a data-bound control!

Seriously, though; can you do single-row updates, ordo all rows get updated even if only one row changes?

If you want single-row updates, just set the..BackColor property of each cell on the current rowto a different color when a change occurs:

oldcell=grid.colfor x = 1 to grid.cols - 1grid.col = xgrid.backcolor = vbBluenext xgrid.col=oldcell

An added benefit is that all rows with changes arenow HIGHLIGHTED, so the user can review things beforethey press 'update'.

Then, when the user presses 'update', scan the gridrow by row; any row with the 'update' .BackColor getsupdated.

I mark rows for deletion with a third color.

'air code - assumes blue background rows get updated,'black backgrounds get deleted...

for x = 1 to grid.rows-1grid.row=xselect case grid.backcolorcase vbBlue:'UPDATE this row of the table'turn the cells in this row back to normalcase vbBlack:'DELETE this row from the table - and the gridend selectnext x

HTH

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08-06-2005 12:18 AM

Re: DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000Randy --

Thanks for the suggestions.

Can you tell me more about: 'UPDATE this row of the tableIs the statement to use ... rsCaseSiteFetch.UpdateBatch adAffectAll ?

I think I had better prepare for multiple-row updates.

Where do I learn how to set up forms not using data-bound controls?

I will appreciate any further help.

Larry

#3



"Randy Day" wrote in messagenews:[email protected]...> L Mehl wrote:>> > A datagrid, dgrCaseSiteInput, could contain as few rows as 1. Severalof> > the columns are for entry.> >> > A cmd button successfully executes a stored procedure to update thedatabase> > based on those entries.> >> > Problem:> > I don't know how to update the table after the user changes a value inan> > entry column.> >> > I don't want to have to depend on the user clicking another record in> > dgrCaseSiteInput to update the source table.> > This goal is an attempt to simplify the user interface, and to allow forthe> > possibility that dgrCaseSiteInput might contain only 1 row.> >> > Can someone tell me> > - which Event(s) to use to trap a change, and>> Keypressed() would seem to be the best bet...>> > - what method to use to write the change to the database ...> > rsCaseSiteFetch.UpdateBatch adAffectAll ?> >> > I populate dgrCaseSiteInput using code at the bottom.>> Ooh, Ick, a data-bound control!> >>>> Seriously, though; can you do single-row updates, or> do all rows get updated even if only one row changes?>> If you want single-row updates, just set the> .BackColor property of each cell on the current row> to a different color when a change occurs:>> oldcell=grid.col> for x = 1 to grid.cols - 1> grid.col = x> grid.backcolor = vbBlue> next x> grid.col=oldcell>> An added benefit is that all rows with changes are> now HIGHLIGHTED, so the user can review things before> they press 'update'.>> Then, when the user presses 'update', scan the grid> row by row; any row with the 'update' .BackColor gets> updated.>> I mark rows for deletion with a third color.>> 'air code - assumes blue background rows get updated,> 'black backgrounds get deleted...>> for x = 1 to grid.rows-1> grid.row=x> select case grid.backcolor> case vbBlue:> 'UPDATE this row of the table> 'turn the cells in this row back to normal> case vbBlack:> 'DELETE this row from the table - and the grid> end select> next x>>> HTH

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08-06-2005 12:24 PM

Re: DataGrid - how detect a change in any field in 1 row, and thenupdate table? VB6, SQL 2000L Mehl wrote:> Randy -->> Thanks for the suggestions.

#4



>> Can you tell me more about: 'UPDATE this row of the table> Is the statement to use ... rsCaseSiteFetch.UpdateBatch adAffectAll ?

I've never heard of 'updatebatch', soI couldn't say.

Please ignore any lousy indentation below;I'm trying to avoid word wrap!

'------------------------dim Rst as ADODB.RecordsetDim Cmd as ADODB.Command

cmd.activeconnection = Rstcmd.commandtype = adcmdtext

with rst..open "select * from table1"

if .recordcount = 0 then'no records returnedelsegrid1.rows = .recordcount.movefirstn = 0do while not .eof'put your data in the grid cell-by-'cell. This allows you to do things'(set cell colors, etc) based on the'incoming field values

grid1.textmatrix(n,0)= .fields.item(0)grid1.textmatrix(n,1)= iif(.fields.item(1)=true,"Yes","No")grid1.textmatrix(n,2)= .fields.item(2)

n=n+1.movenextloopend ifend with

private sub air_code_update()Dim strText as string

'create a SQL UPDATE string using the specific'data from your grid row. I prefer this method'over the Rst.update method because I control the'actual SQL command being sent to the DB engine

strText = "Update table1 set field1=" + grid1strtext = strText + " where "

cmd.commandstring=strTextcmd.executeend sub

>> I think I had better prepare for multiple-row updates.>> Where do I learn how to set up forms not using data-bound controls?>

This one doesn't give an example of updating an existingrecord, but it's OK for the basics:http://www.timesheetsmts.com/adotutorial.htm

This one updates, but you have to ensure your grid row &recordset row match when doing updates. This _might_ workwith your data-bound grid:http://www.officecomputertraining.co...ges/page37.asp

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08-06-2005 10:58 PM

Re: DataGrid - how detect a change in any field in 1 row, and then update table? VB6, SQL 2000Randy --

Many thanks for the example code and the references.

I will dig in to it.

Larry

"Randy Day" wrote in messagenews:[email protected]...> L Mehl wrote:> > Randy --> >> > Thanks for the suggestions.

#5



VB programmer needed | Connection To SQL Database

> >> > Can you tell me more about: 'UPDATE this row of the table> > Is the statement to use ... rsCaseSiteFetch.UpdateBatch adAffectAll ?>> I've never heard of 'updatebatch', so> I couldn't say.>> Please ignore any lousy indentation below;> I'm trying to avoid word wrap! >> '------------------------> dim Rst as ADODB.Recordset> Dim Cmd as ADODB.Command>> cmd.activeconnection = Rst> cmd.commandtype = adcmdtext>> with rst> .open "select * from table1">> if .recordcount = 0 then> 'no records returned> else> grid1.rows = .recordcount> .movefirst> n = 0> do while not .eof> 'put your data in the grid cell-by-> 'cell. This allows you to do things> '(set cell colors, etc) based on the> 'incoming field values>> grid1.textmatrix(n,0)= .fields.item(0)> grid1.textmatrix(n,1)= iif(.fields.item(1)=true,"Yes","No")> grid1.textmatrix(n,2)= .fields.item(2)>> n=n+1> .movenext> loop> end if> end with>> private sub air_code_update()> Dim strText as string>> 'create a SQL UPDATE string using the specific> 'data from your grid row. I prefer this method> 'over the Rst.update method because I control the> 'actual SQL command being sent to the DB engine>> strText = "Update table1 set field1=" + grid1> strtext = strText + " where ">> cmd.commandstring=strText> cmd.execute> end sub>> >> > I think I had better prepare for multiple-row updates.> >> > Where do I learn how to set up forms not using data-bound controls?> >>> This one doesn't give an example of updating an existing> record, but it's OK for the basics:> http://www.timesheetsmts.com/adotutorial.htm>> This one updates, but you have to ensure your grid row &> recordset row match when doing updates. This _might_ work> with your data-bound grid:> http://www.officecomputertraining.co...ges/page37.asp

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