Develop Reference

How to get current row of datagridview values when clicking on button?

I have a View Model in which my data is stored to be used on the presenter and window. However, I now need to get (when pressing a button) the current row's results on the grid into my view model. I first used the mouse double click event, but the requirements changed from that to a button on the form:
private void dgvResults_CellMouseDoubleClick(object sender, DataGridViewCellMouseEventArgs e)
{
if (this.colOrderNo.Index != e.ColumnIndex || e.RowIndex < 0) return;
var auditOrder = (PurchaseOrdersTrackingViewModel) this.dgvResults.Rows[e.RowIndex].DataBoundItem;
this.AuditOrderKey = $"{auditOrder.OrderNo}|{auditOrder.ItemNo}|{auditOrder.WarehouseId}|{auditOrder.ItemSequence}";
}
That's my old code. Now I need that here:
private void btnAuditLog_Click(object sender, EventArgs e)
Not sure how to refer to the RowIndex without the DataGridViewCellMouseEventArges event. I tried the CurrentRow property, but it doesn't do the job.
Just another question on the fly, if someone could assist with that as well, how do I get a value from one form to another, spesifically a properties value. It's not on the grid, in a control. It's basically just public string order that's all. I set the value on one form, then need it for query filtering on another. Let me know if you need anything else.

You want to use the SelectedRows property of the DataGridView. It tells which row is selected. In this case, you seem to want the first selected row (since you have a single property called this.AuditOrderKey).
The column order no to longer matters in this context.
if (dgvResults.SelectedRows.Count == 0) return;
var auditOrder = (PurchaseOrdersTrackingViewModel) dgvResults.SelectedRows[0].DataBoundItem;
this.AuditOrderKey = $"{auditOrder.OrderNo}|{auditOrder.ItemNo}|{auditOrder.WarehouseId}|{auditOrder.ItemSequence}";
If you don't have selected rows, CurrentRow is an option:
if (dgvResults.CurrentRow == null) return;
var auditOrder = (PurchaseOrdersTrackingViewModel) dgvResults.CurrentRow.DataBoundItem;
this.AuditOrderKey = $"{auditOrder.OrderNo}|{auditOrder.ItemNo}|{auditOrder.WarehouseId}|{auditOrder.ItemSequence}";

Use the SelectedRows property of the DataGridView. Assuming that you set your DataGridView as MultiSelect = false; and SelectionMode = FullRowSelect;
if (dgvResults.SelectedRows.Count > 0)
{
dgvResults.SelectedRows[0].Cells["yourColumnName"].Value.ToString();
}
In your button click event, it will look like this. (Assuming that your button name is btnEdit)
private void btnEdit_Click(object sender, EventArgs e)
{
if (dgvResults.SelectedRows.Count > 0)
{
string selectedValue = dgvResults.SelectedRows[0].Cells["yourColumnName"].Value.ToString();
}
}

How to get Row Id in RepositoryLookupEdit_ValueChanged event

I have gridcontrol that has a RepositoryLookupEdit in one of the columns. I can get the value of RepositoryLookupEdit after changed, but I dont know how to get the which row's RepositoryLookupEdit value changed. How can I get the Row ID?
With the code below, I can get the RepositoryLookupEdit value.
private void repositoryItemLookUpEdit1_EditValueChanged(object sender, EventArgs e)
{
LookUpEdit edit = sender as LookUpEdit;
var row = edit.Properties.GetDataSourceRowByKeyValue(edit.EditValue);
}

Since repositoryItemLookUpEdit isn't restricted to GridControls you cannot get the row handle from this event. You however have other possibilities.
First, if the edit is done by the user, you can use the ColumnView.GetFocusedRow() method to get the current grid row.
If however the edit value is changed via code it will also be changed in the grid so you can now use the ColumnView.CellValueChanged event.
private void repositoryItemLookUpEdit1_EditValueChanged(object sender, EventArgs e)
{
LookUpEdit edit = sender as LookUpEdit;
var row = edit.Properties.GetDataSourceRowByKeyValue(edit.EditValue);
gridRow = gridView.GetFocusedRow() as MyDataRow
}

How to hide Rows In GridView

I have came across the we and check different web pages but I didnt find the one I was looking for. I have a gridview and all I want is to hide one of the rows based on the value in the cell.
What I need to happen is something like in the logic of this :
if (row = "someValue")
{
row.Visible = false;
}
for the record, I have tried this but no luck:
protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
DataRow row = ((DataRowView)e.Row.DataItem).Row;
string oRoleName = row.Field<string> ("SVal");
if (oRoleName.Equals ("someValue")) {
e.Row.Visible = false;
}
}
It is not base weather the row is the first the 2nd or third (like: e.row[1], e.row[2], etc.) I need to filter the data base on the value in the row. Can anyone teach me how could this be done ?
Would appreciate any help.

In a RowDataBound event add something along the lines of this logic
if (e.Row.Cells[5].Text == "foo") {
e.Row.Visible = false;
}
EDIT:
If youre looking to check the value of each row as its entered (unless im understanding incorrectly, you should probably expand on your question a bit.)
Then you may want to use the event "CellValueChanged"
Check to see if the cell is null beforehand and then do the check for your value and apply logic accordingly below that.
private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
if (dataGridView1.CurrentCell != null) {
if (dataGridView1.CurrentCell.Value.ToString() == "foo")
{
// do your stuff here.
}
}
}

What you need to do is get the value of the column within the GridViewRow. You are on the right track. In RowDataBound, find the column you are after. Then check its value.
Here is an example. Use FindControl() to get the control in the specified column for the current row. If the control in that column is a Label, check the text of the label to see if it is the value you want hidden. If so, hide the row.
protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
Label lbl = e.Row.FindControl("MyLabel");
if (lbl.Text == "MyValue")
{
e.Row.Visible = false;
}
}
}

Can I make row cell value readOnly on XtraGrid just for one row?

How can I make a specific row cell readonly(not editable) on XtraGrid? For example just for row[0] but not all rows.

You can use the GridView.CustomRowCellEdit event:
//...
var repositoryItemTextEditReadOnly = new DevExpress.XtraEditors.Repository.RepositoryItemTextEdit();
repositoryItemTextEditReadOnly.Name = "repositoryItemTextEditReadOnly";
repositoryItemTextEditReadOnly.ReadOnly = true;
//...
void gridView1_CustomRowCellEdit(object sender, CustomRowCellEditEventArgs e) {
if(e.RowHandle == 0)
e.RepositoryItem = repositoryItemTextEditReadOnly;
}

You can use the ColumnView.ShownEditor event:
void gridView1_ShownEditor(object sender, EventArgs e)
{
ColumnView view = (ColumnView)sender;
view.ActiveEditor.Properties.ReadOnly = view.FocusedRowHandle == 0;
}

Source: How to Conditionally Prevent Editing for Individual Grid Cells
When you need to make a grid cell read-only based on a condition, the
best approach is to use the ShowingEditor event of the
GridView and prevent editing via the e.Cancel parameter passed to the event. Simply set it to True when it is necessary to prevent
editing.
// disable editing
private void gridView1_ShowingEditor(object sender, System.ComponentModel.CancelEventArgs e) {
GridView view = sender as GridView;
e.Cancel = view.FocusedRowHandle == 0;
}
Source - How to display disabled buttons for particular cells within a ButtonEdit column
Another approach is that assign a read only repository editor control as #DmitryG suggested and I have also implement that way some times when there was a column which contains a button.
In your case you should create two TextEdit repository items. One with
the enabled button and another with the disabled button. Then handle
the GridView.CustomRowCellEdit event and pass the necessary
repository item to the e.RepositoryItem parameter according to a
specific condition. Please see the Assigning Editors to Individual
Cells help topic for additional information.
private void gridView1_CustomRowCellEdit(object sender, CustomRowCellEditEventArgs e)
{
if (e.Column.Caption == "Any2")
{
if (e.RowHandle == 0)
e.RepositoryItem = columnReadOnlyTextEdit;
else
e.RepositoryItem = columnTextEdit;
}
}
References:
How to customize the Look-And-Feel of my grid cells
How to make my grid columns read-only

Get Text from DataGridViewComboxBoxCell

I'm trying to retrieve the value of a DataGridViewComboBoxCell in the following way
When adding items to the ComboBox:
public void LoadLayouts()
{
ImmutableSet<string> layoutNames = _store.Current.Keys;
var dgvComboBox = (DataGridViewComboBoxColumn)this.schedulesDataGrid.Columns[1];
foreach (string name in layoutNames)
{
dgvComboBox.Items.Add(name);
}
}
When trying to read back the value:
var combo = (DataGridViewComboBoxCell) this.schedulesDataGrid[args.ColumnIndex, args.RowIndex];
string LayoutChosen = (string)combo.Value;
However, even if I can see that there is a value selected in the ComboBox, the Value comes back as null, and the FormattedValue comes back as "".
I've tried just setting the array of names as my DataSource, but then I'm not sure what to set for my Display and Value Members, considering I only have a single value (the name of the layout)
Thoughts?

At the time you attempt to read the cell's value, the row has not committed changes. If you have row headers visible, you will see the pencil icon on the row that has not been committed. This normally happens after the cell looses focus. You can force the issue by hooking into the in-place editing control combo-box and causing it to post EndEdit when it changes values:
void dgv_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
var comboBox = e.Control as ComboBox;
if (comboBox != null)
{
// remove any handler we may have added previously
comboBox.SelectionChangeCommitted -= new EventHandler(comboBox_SelectionChangeCommitted);
// add handler
comboBox.SelectionChangeCommitted += new EventHandler(comboBox_SelectionChangeCommitted);
}
}
void comboBox_SelectionChangeCommitted(object sender, EventArgs e)
{
// Allow current dispatch to complete (combo-box submitting its value)
// then EndEdit to commit the change to the row
dgv.BeginInvoke(new Action(() => dgv.EndEdit()));
}