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C# User selecting a cell in a DataGridView doesn't trigger the SelectionChanged event?

I'm working on a Windows Form that's got two DataGrids.
I'm currently trying to make it so that when one cell is selected in DataGridView1, something else is being displayed in DataGridView2.
The problem is that when I run my app, selecting any of the cells doesn't do anything at all.
I've tried using
private void DataGridView1_SelectionChanged(object sender, EventArgs e)
{
MessageBox.Show("The selected cell has changed!");
};
to check and see if the event is registering, and nothing happened.
The SelectionMode for the DataGridView is set to CellSelect.
What am I doing wrong?
Thanks In Advance.

Examples:-Check This Also
private void datagridview1_SelectionChanged(object sender, EventArgs e)
{
if (datagridview1.SelectedCells.Count > 0)
{
int selectedrowindex = datagridview1.SelectedCells[0].RowIndex;
DataGridViewRow selectedRow = datagridview1.Rows[selectedrowindex];
string a = Convert.ToString(selectedRow.Cells["you have to mention you cell corresponding column name"].Value);
}
}
Use this And Take reference
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
if (dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value != null)
{
MessageBox.Show(dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString());
}
}
Another
MessageBox.Show(dataGridView1.SelectedCells[0].Value.ToString());
Check this property Also DataGridView1.FullRowSelect = true

DataGridViewComboBoxColumn - access ComboBox to attach click event

I want to create DataGridViewComboBoxColumn and attach to it's combo box Click event (i want to generate it's datasource on click only).

While I have no idea about why you need Click event of that ComboBox control,
you can access that combo box using EditingControlShowing event:
private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
//Check if the event is for your column, for example column 1
if (this.dataGridView1.CurrentCell.ColumnIndex == 1)
{
var comboBox = e.Control as DataGridViewComboBoxEditingControl;
comboBox.Click -= comboBox_Click;
comboBox.Click += comboBox_Click;
}
}
private void comboBox_Click(object sender, EventArgs e)
{
var comboBox = sender as DataGridViewComboBoxEditingControl;
//use comboBox here
}
But you should know, you can set the DataSource for you column in CellClick event of your datagridview too:
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
if(e.ColumnIndex==1 && e.RowIndex>-1)
{
//Check if the event is for your column, for example column 1
var column = (DataGridViewComboBoxColumn)this.dataGridView1.Columns[e.ColumnIndex];
//use column.DataSource
}
}
And another important thing you should know is if you set a datasource that not contains the value of one of cells of this column, you will receive errors while rendering the column.

c# .net datagridview SelectionChanged

I'm racking my head over something that should be pretty simple to do. Its been a day now so I finally give up and I will ask the question. How can I actually trigger the selectionChanged event on the datagridview in .net?
I would basically like to grab the row values when the user double-clicks/ or single clicks any where on a row. but I cant for the life of me get this event to fire even tough I read here that this should be the even I need to use?
private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
foreach (DataGridViewRow row in AddrGrid.SelectedRows)
{
string value1 = row.Cells[0].Value.ToString();
string value2 = row.Cells[1].Value.ToString();
//...
}
}
I have tried something similar to this but im hopeless I click on the datagrid cells or rows and this does not fire what I'm I missing?
when I click on a cell I get this event to fire.
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
Addresses.aTyp = AddrGrid.Rows[AddrGrid.CurrentCell.RowIndex].Cells["Address Type"].Value.ToString();
Addresses.seq = AddrGrid.Rows[AddrGrid.CurrentCell.RowIndex].Cells["Sequence"].Value.ToString();
}
But I like to capture the double click or click on a row not just a cell.
Any help would be most appreciated.

private void dataGridView_SelectionChanged(object sender, EventArgs e)
{
foreach (DataGridViewRow row in dataGridView1.SelectedRows)
{
string value1 = row.Cells[0].Value.ToString();
string value2 = row.Cells[1].Value.ToString();
}
}

you can use this
private void AddrGrid_CellEnter(object sender, DataGridViewCellEventArgs e)
{
Addresses.aTyp = AddrGrid.Rows[AddrGrid.CurrentCell.RowIndex].Cells["Address Type"].Value.ToString();
Addresses.seq = AddrGrid.Rows[AddrGrid.CurrentCell.RowIndex].Cells["Sequence"].Value.ToString();
}

On your grid object lets call it 'foo'. You will do something like..
foo.SelectionChanged += dataGridView1_SelectionChanged
you will need to do that somewhere to wire the event up. I normally do it in the constructor for the form

Many answers relating to the selectionchanged event for a DataGridview use "DG1.SelectedRows(0)". This is fundementally wrong. There may be multiple rows selected and the first selected row may not be the newly selected row. Unless you want to parse over all of the selected rows each time, "DG1.Rows(DG1.CurrentCell.RowIndex)" should be used

DataGridView Cell Editing

Hi
I have a DataGridView which is bound to an XML source.
I have a problem in editing cells. The cell on click becomes selected and when it is edited, by default we overwrite it. My requirement says it should be ready for editing and not selected when clicked.
I want to generate a row dynamically whenever the 'tab' key is pressed.
How can I achieve this?

If I understand you correctly you want the cell to enter edit mode as soon as it is clicked. This can be achieved by setting the EditMode property of the DataGridView to EditOnEnter.
This leaves the text in the editing control selected however, so if you don't want that you could use:
dataGridView1_CurrentCellChanged(object sender, EventArgs e)
{
dataGridView1.BeginEdit(false);
}
Can you explain what you mean by adding row dynamically?

With respect to question 1)
You can try this:
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
this.dataGridView1.CellEnter += new DataGridViewCellEventHandler(myDataGrid_CellEnter);
}
void myDataGrid_CellEnter(object sender, DataGridViewCellEventArgs e)
{
if ((this.dataGridView1.Columns[e.ColumnIndex] is DataGridViewTextBoxColumn) ||
(this.dataGridView1.Columns[e.ColumnIndex] is DataGridViewComboBoxColumn))
{
this.dataGridView1.BeginEdit(false);
}
}

DataGridView capturing user row selection

I am having trouble handling the selections in DataGridView.
My grid view contains an amount column. There is a textbox on the form which should display the total amount of the selected grid view rows. Hence I need to capture events when the user selects/ deselects the gridview rows and calculate (add/ subtract) the amount accordingly. I have found two methods of doing it:
Using the RowEnter and RowLeave events.
These work fine when user selects/ deselects a single row. However, when the user is selecting multiple rows at one go, the event gets fired only for the last row. Hence, from my total amount only the amount in the last row gets added/ subtracted. Thus making my result erroneous.
Using the RowStateChanged event.
This works for multiple rows. However, the event gets fired event if the user scrolls through the datagrid.
Has anyone handled such a scenario. I would like to know which datagrid event I should be using, so that my code executes only when user selects/ deselects rows including multiple rows.

Found the solution. I can use RowStateChanged and run my code only if StateChanged for the row is Selected...
private void dgridv_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
{
// For any other operation except, StateChanged, do nothing
if (e.StateChanged != DataGridViewElementStates.Selected) return;
// Calculate amount code goes here
}

I use SelectionChanged event or CellValueChanged event:
dtGrid.SelectionChanged += DataGridView_SelectionChanged;
this.dtGrid.DataSource = GetListOfEntities;
dtGrid.CellValueChanged += DataGridView_CellValueChanged;
private void DataGridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
DataGridViewRow row = dtGrid.Rows[e.RowIndex];
SetRowProperties(row);
}
private void DataGridView_SelectionChanged(object sender, EventArgs e)
{
var rowsCount = dtGrid.SelectedRows.Count;
if (rowsCount == 0 || rowsCount > 1) return;
var row = dtGrid.SelectedRows[0];
if (row == null) return;
ResolveActionsForRow(row);
}

I think you can consider the SelectionChanged event:
private void DataGridView1_SelectionChanged(object sender, EventArgs e) {
textbox1.Text = DataGridView1.SelectedRows.Count.ToString();
}

You can use SelectionChanged event and retrieve the row index of the selected cell(s):
private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
if (dataGridView1.SelectedCells.Count > 0)
Do_Something_With_It(dataGridView1.SelectedCells[0].RowIndex);
}

You can simply capture this in following way, but it is restricted to single row selection only:
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
MessageBox.Show("Selected row is=" + e.RowIndex);
// you can perform (any operation) delete action on selected row like
dataGridView1.Rows.RemoveAt(e.RowIndex);
dataGridView1.Refresh();
}

You can use your first method (row enter row leave) along with the SelectedRows property. Meaning, when you detect those events, and you need to calculate, instead of using the row from the event args, loop through the SelectedRows and get your total.