gleznov
asked on
Using only part of the data in a datagrid
Hi,
I'm filling a dataset with an entire table (because my code encounters errors if I don't). Then I want only 4 columns of that table to appear in a datagrid. Here's where I'm messed up:
I use a dataadapter to define a select * on my table, supplies_trans. Then I generate a dataset from that.
I use this code to try and start up:
Dim DRGrid As New SqlClient.SqlDataAdapter("
DRGrid.Fill(DataSet_Suppli
DBGrid1.DataSource = DataSet_Supplies1
DBGrid1.DataMember = "Supplies_Trans"
The DRGrid.Fill crashes me in these cases:
1) if the statement above it has select item, item alias, item etc (so I have to use select *)
2) if I've created a dataadapter using such a select statement other than select *
So I don't know if I can narrow it down somehow before connecting datasource/member to it. Maybe make another dataset and pull only the info I want (but I don't know the commands for this (or rather methods/etc)) or to be able to somehow say DBGrid1.only show these columns
JP
I'm filling a dataset with an entire table (because my code encounters errors if I don't). Then I want only 4 columns of that table to appear in a datagrid. Here's where I'm messed up:
I use a dataadapter to define a select * on my table, supplies_trans. Then I generate a dataset from that.
I use this code to try and start up:
Dim DRGrid As New SqlClient.SqlDataAdapter("
DRGrid.Fill(DataSet_Suppli
DBGrid1.DataSource = DataSet_Supplies1
DBGrid1.DataMember = "Supplies_Trans"
The DRGrid.Fill crashes me in these cases:
1) if the statement above it has select item, item alias, item etc (so I have to use select *)
2) if I've created a dataadapter using such a select statement other than select *
So I don't know if I can narrow it down somehow before connecting datasource/member to it. Maybe make another dataset and pull only the info I want (but I don't know the commands for this (or rather methods/etc)) or to be able to somehow say DBGrid1.only show these columns
JP
You can add (in editon time) a new TableStyle in the TableSyleCollection of your DataGrid and map it to the name of you table in DataSet, and then add as new DataGridColumnStyles as you need and map them to the columns (names) you want to display.
ASKER
Can you be more specific? How exactly do I use that? It sounds like what I'm looking for.
JP
JP
ASKER
I created a tablestyle with the columns I want using the GUI - the grid is mapped to the table, then I made tablestyles. Is this wrong? I still get the full table output (all columns w/ their original names)
JP
JP
ASKER
I figured it out - I don't know what was wrong with my original but when I tweaked the select statements around and redid stuff, it worked fine. I think maybe some minor non-matchup in the select statement for the dataadapter and the one to fill the control were causing my main problems.
JP
JP
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"SELECT supplies_trans.trans_date,
KGreg