C# DataGridView Cell AutoSelect

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Hi All,

I want to select a particular cell in a datagridview using C# programmatically.
I passes a datatable as a datasource of the datagridview.

After that I want to select given cells automatically after loading data.

In the Code,

C#

//loading data to the datagrid
 dataGridView2.DataSource=dt;         //dt is the data table
 dataGridView2[2, 1].Selected = true;

But this does not work.

But if I use the same code at the click event of a button,particular cell is selected.
Can anyone tell me what is the cause for this problem??

Posted 31-Jul-12 8:02am

Sameera Fonseka

Updated 31-Jul-12 8:32am

Kenneth Haugland

v3

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Kenneth Haugland 31-Jul-12 14:16pm

WPF?

Sameera Fonseka 31-Jul-12 14:19pm

Yep..it is a windows form..tkx

Kenneth Haugland 31-Jul-12 14:22pm

Èhh, Windows Froms and Windos Presantation Foundation (WPF) is two very different tings.... Its not clear to me what of those you use... Im guessing WinForms but Im not sure.

Sameera Fonseka 31-Jul-12 14:30pm

sorry i m using win forms.. i will be very thankful if you can give me any hint..tkx

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obp42 · Answer 1 · 2012-07-31T08:47:00

Solution 1

Use

C#

dataGridView2.CurrentCell = dataGridView2[2, 1];

I got the multiple cell selection to work by using:

C#

dataGridView2.MultiSelect = true;
dataGridView2.SelectionMode = DataGridViewSelectionMode.CellSelect;

// set a current cell before selecting any
dataGridView2.CurrentCell = cableGrid[2, 1];
dataGridView2[2, 1].Selected = true;
// now select any others you want
dataGridView2[3, 1].Selected = true;

I found that without first setting CurrentCell then Selected = true did not work.
After adding this line though I was able to select as many cells as I wanted.
Not entirely sure why it works this way, I am curious if anyone knows the answer though.

Posted 31-Jul-12 8:47am

obp42

Updated 1-Aug-12 6:02am

v2

Comments

Sameera Fonseka 1-Aug-12 11:27am

Thankx alot..But this didn't work either.I tried it earlier..If I place this code inside the databinding complete event of the datagrid view it also worked..
That is the point i am stuck..How can i programmatically select multiple cells of a datagridview in a separate method?

obp42 1-Aug-12 12:03pm

Added some code that will hopefully help you, check it out.

Sameera Fonseka 1-Aug-12 13:16pm

This didnt work either..but any setting of a cell can be done in a button click event..that is the point im stucked.
Before selecting cells i set the datasource of that datagridview to a datatable returned from another method.
Even i put above code,only the current cell is selected..tkx

obp42 2-Aug-12 16:19pm

You said you got it to work if you put it in the DataBindingComplete event right? Is there something wrong with doing it that way?

Sameera Fonseka 3-Aug-12 5:43am

But that does not do my requirement..Sequence of the process datatable is returned from another method.Then it is set as the datasource of the datagridview.
After that I want to select some cells of that datagrid view according to some paramateres.Problem arises with that.I can't select any cell programmatically..

But if i manually add some records to the datagridview i can select any cell programmatically.So i am sure that it is some issue with the datatable returned.Is there any specific way to create a datatable in order to set it as the datasource of the datagridview?
Any help is highly appreciated..thank you very much

obp42 3-Aug-12 9:35am

I'm not sure that I understand what you're trying to say but I think you still should be able to do this in the DataBindingComplete handler. Right after you return your DataTable, add the cells you need highlighted to a global array (something like int coords[,]), then loop through these in the DataBindingComplete event and set them all to selected.
If this doesn't work then try posting some more code in your original question and hopefully myself or someone else can help.