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.NET Forum / Windows Forms / WinForm General / September 2005Datagrid multiple select
Hi all, I have put some code in the mouseup event for my datagrid in order to select the entire row. Does anybody know how I can get multiple selection to work on my datagrid? thanks Gav hi Gav, i use the built-in multiple select by just holding down Ctrl while i click on the left margin of each row. is this what you want? tim -------------------------- blog: http://tim.mackey.ie This is the behaviour that I'm after yes however i do not show the row headers... > hi Gav, > i use the built-in multiple select by just holding down Ctrl while i click [quoted text clipped - 5 lines] > -------------------------- > blog: http://tim.mackey.ie hi Gav, may i ask what is your reason for hiding the row headers? you are re-creating functionality that is already there, and requiring the users to learn a non-standard way of selecting a row. most users will be familiar with the row-header way with excel. you must have a special case for doing this? i don't want to be a smart a.s but before i/we try and help answer the question, it would be good to know the reasoning behind your course of action. did you try setting the width of the rowheader to 15 pixels? this makes it much less obtrusive in terms of screen space. tim -------------------------- blog: http://tim.mackey.ie > This is the behaviour that I'm after yes however i do not show the row > headers... [quoted text clipped - 8 lines] >> -------------------------- >> blog: http://tim.mackey.ie Why would this be a 'non-standard way of selecting a row' this is how all listview controls work, look at the inbox of outlook/outlook express you have a list (with no column headers) which you can hold CTRL and click on multiple rows to select them. I guess I could have looked into making a editable ListView but that seems like a lot more work because the datagrid looks just the same when you hide the row headers, caption, set the back colour to white etc, then you already have a listview look that you can edit. Gavin > hi Gav, > may i ask what is your reason for hiding the row headers? [quoted text clipped - 25 lines] >>> -------------------------- >>> blog: http://tim.mackey.ie A good example of what I'm looking for is the Library list in Windows media player 10... > Why would this be a 'non-standard way of selecting a row' this is how all > listview controls work, look at the inbox of outlook/outlook express you [quoted text clipped - 37 lines] >>>> -------------------------- >>>> blog: http://tim.mackey.ie hi Gav, sorry i didn't know you were using the datagrid to look and behave like a listview. in the normal datagrid situation, it would be non-standard. to be honest, i think the listview is the one you want. the WM10 library list is a listview. you can set LabelEdit = true, View=Details. you've got your multi-select built in, column sorting, etc. i couldn't get the items to BeginEdit() reliably on SelectedIndexChanged for some reason, it would flicker editable and then return to normal. will your users want to edit the text just by selecting an item in the list, or will the normal listview renaming functionality be sufficient? tim -------------------------- blog: http://tim.mackey.ie > Why would this be a 'non-standard way of selecting a row' this is how all > listview controls work, look at the inbox of outlook/outlook express you [quoted text clipped - 37 lines] >>>> -------------------------- >>>> blog: http://tim.mackey.ie Sorry to be a pain, I know your trying to help, but I do not like the idea of doing it this way, you cannot bind a datasource to a listview like you can a datagrid, that was another reason for me to use datagrids over listview they are easier to use at design time. I still would have much prefered an answer to my original question, is it not possible to caption in the onclick that the ctrl key is being held and multiple select in that way? Thanks Gav > hi Gav, > sorry i didn't know you were using the datagrid to look and behave like a [quoted text clipped - 54 lines] >>>>> -------------------------- >>>>> blog: http://tim.mackey.ie hi Gav, you're right. i should have just trusted that you knew what you wanted! i got this code to behave as you have described private void dataGrid1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e) { if((Control.ModifierKeys & Keys.Control) == Keys.Control) this.dataGrid1.Select(this.dataGrid1.CurrentRowIndex); } interestingly this code in MouseDown wouldn't select the row. also datagrid_Click didn't fire for clicks inside the cells. hope this works for you. tim Thanks for the reply I thought I had been forgotten about for a moment there... I have tried this out and all it seems to do is select the whole row that I click on when I hold down CTRL, it doesn't seem to still keep the selection on the other rows. Thanks again Gav > hi Gav, > you're right. i should have just trusted that you knew what you wanted! [quoted text clipped - 11 lines] > hope this works for you. > tim hi Gav, sorry i thought your original request was just to select the whole row. i lost track of it with all the posts. i'm all out of inspiration, except to suggest this control i just found: http://www.csharphelp.com/archives2/archive341.html. it is an editable listview control, with Ctrl+click multi select. if that doesn't work you could try a repost, stating that you have removed the rowheaders of a datagrid, but want to multi-select using Ctrl + click. good luck tim -------------------------- blog: http://tim.mackey.ie Hi Gav, I'm actually encountering the same problem as yours, meaning i want to be able to let users select multiple rows on a datagrid without showing the rowheaders with the row selector represented by an arrow. Could you find any solution to your problem ? Regards, Mike > hi Gav, > sorry i thought your original request was just to select the whole row. i [quoted text clipped - 12 lines] > -------------------------- > blog: http://tim.mackey.ie Sorry Mike, I do not have a solution as of yet, but I will surely let you know when I do. Regards Gav > Hi Gav, > [quoted text clipped - 25 lines] >> -------------------------- >> blog: http://tim.mackey.ie hi gav, did that control not serve your purposes? http://www.csharphelp.com/archives2/archive341.html i downloaded and tried it out and it seemed to do what you wanted. tim -------------------------- blog: http://tim.mackey.ie Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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