In this code I'm creating Few DataGridViews. Number of those depends on file which within each launch of application will be different, so is number of DataGridViews.
How can I Access particular dataGridView grid[i] and modify it from which event Form1_UserAddedRow was called in that method?
Code:
public void Form1_Load(object sender, EventArgs e)
{
string[] lines = System.IO.File.ReadAllLines(#"..\..\Base.txt");
int diet_num = 0;
int grid_num = 0;
foreach (string x in lines) diet_num++;
grid_num = (diet_num / Constant.DATAGRID_DIETS_IN_GRID) + 1;
DataGridView[] grid = new DataGridView[grid_num];
for (int i = 0; i < grid_num; i++)
{
grid[i] = new DataGridView();
grid[i].Tag = i;
grid[i].Parent = this;
grid[i].Location = new Point(12, 12 + (8 + Constant.DATAGRID_ROW_HEIGHT * 2) * i);
grid[i].Visible = true;
grid[i].RowHeadersVisible = false;
grid[i].Height = Constant.DATAGRID_ROW_HEIGHT * 2;
grid[i].Width = Constant.DATAGRID_COLUMN_SIZE * Constant.DATAGRID_DIETS_IN_GRID + 3;
grid[i].UserAddedRow += Form1_UserAddedRow;
}
this.Width = Constant.DATAGRID_COLUMN_SIZE * Constant.DATAGRID_DIETS_IN_GRID + 40;
foreach (string x in lines)
{
DataGridViewColumn col = new DataGridViewTextBoxColumn();
col.Width = Constant.DATAGRID_COLUMN_SIZE;
col.HeaderText = x;
int colIndex = grid[0].Columns.Add(col);
}
}
private void Form1_UserAddedRow(object sender, DataGridViewRowEventArgs e)
{
//I want to access grid[i] and modify it here.
}
You should be able to cast the Sender object parameter in your event handler to the type of DataGridView to retrieve the grid which has been effected.
You are getting the DataGridViewRowEventArgs e as the argument to your event handler and thus you can access the Row property like
e.Row.Cells["somename"].Value = "some_value";
private void Form1_UserAddedRow(object sender, DataGridViewRowEventArgs e)
{
var grid = sender as DataGridView;
if (grid == null) return;
//... do something
}
Related
I have three combobx for time and I want to edit the text of this comboboxes from another view this is the code for combobpx view
public partial class Combo : Window
{
public Combo()
{
InitializeComponent();
}
private void hrComboBox_Loaded(object sender, RoutedEventArgs e)
{
List<string> hours = new List<string>();
for (int i = 0; i <= 24; i++)
{
if (i < 10)
hours.Add("0" + i);
else
hours.Add(i + "");
}
var comboBox = sender as ComboBox;
comboBox.ItemsSource = hours;
comboBox.SelectedIndex = 0;
}
private void MinComboBox_Loaded(object sender, RoutedEventArgs e)
{
List<string> Minutes = new List<string>();
for (int i = 0; i <= 60; i++)
{
if (i < 10)
Minutes.Add("0" + i);
else
Minutes.Add(i + "");
}
var comboBox = sender as ComboBox;
comboBox.ItemsSource = Minutes;
comboBox.SelectedIndex = 0;
}
private void SecComboBox_Loaded(object sender, RoutedEventArgs e)
{
List<string> Seconds = new List<string>();
for (int i = 0; i <= 60; i++)
{
if (i < 10)
Seconds.Add("0" + i);
else
Seconds.Add(i + "");
}
var comboBox = sender as ComboBox;
comboBox.ItemsSource = Seconds;
comboBox.SelectedIndex = 0;
}
private void OKButton_Click(object sender, System.Windows.RoutedEventArgs e)
{
DialogResult = true;
}
the second view invokes this view as dialog my problem is when I add the text to one of this comboboxes the text isn't set and still "00" the code I use as follows:
var dialog = new Combo();
string[] timeArr = delay.Split(':');
//here is my problem when the dialog is loading the text
//of three comboboxes isn't change
dialog.hr.Text = timeArr[0];
dialog.Min.Text = timeArr[1];
dialog.Sec.Text = timeArr[2];
if (dialog.ShowDialog() == true)
{
string time = dialog.hr.Text+":"+dialog.Min.Text+":"+dialog.Sec.Text;
delay = time;
nextDelay = time;
}
anyone help me, thanks :)
I was wondering how am I supposed to assign an eventHandler for each array element in my label array. I understand that it's not possible to create a method for each of eventHandlers, so what could be the solution? Thank you!
for(int i = 0, i < 10; i++)
{
lbs[i] = new Label();
lbs[i].Location = new System.Drawing.Point(76 + f, 164);
lbs[i].Size = new System.Drawing.Size(49, 17);
//able to perform this, but wont able to create a method for this
lbs[i].Click += new System.EventHandler(lbs[i]_Click);
}
//can't do this, what is alternative?
public void lbs[i]_Click(object sender, EventArgs e)
{
}
Your function name is invalid (you can't have [] in a function name) try changing lbs[i]_Click to lbs_Click.
for(int i = 0; i < 10; i++)
{
lbs[i] = new Label();
lbs[i].Location = new System.Drawing.Point(76 + f, 164);
lbs[i].Size = new System.Drawing.Size(49, 17);
lbs[i].Name = "label" + i;
//able to perform this, but wont able to create a method for this
lbs[i].Click += new System.EventHandler(lbsi_Click);
}
public void lbsi_Click(object sender, EventArgs e)
{
var label = sender as Label;
if(label != null && label.Name == "label1"){
//event was raised from label1
}
}
I have two gridviews, and when the user highlights a row on the first gridview and clicks a button, it should move to the second gridview.
When I click on the button that record gets added but it only add the last row I've selected (if I select 20 rows, only the last gets added).
All records that are selected should be moved.
How do I do this in ASP.NET?
private void button1_Click_1(object sender, EventArgs e)
{
DataGridViewRow dr = dataGridView1.SelectedRows[0];
dtItems.Columns.Add("city_ID");
dtItems.Columns.Add("city_Name");
dtItems.Columns.Add("status");
dtItems.Columns.Add("date");
if (dataGridView1.Rows.Count > 1)
{
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
if (dataGridView1.Rows[i].Cells[0].Value != null)
{
DataRow row;
row = dtItems.NewRow();
row["city_ID"] = dataGridView1.Rows[i].Cells[1].Value.ToString();
row["city_Name"] = dataGridView1.Rows[i].Cells[2].Value.ToString();
row["status"] = dataGridView1.Rows[i].Cells[3].Value.ToString();
row["date"] = dataGridView1.Rows[i].Cells[4].Value.ToString();
dtItems.Rows.Add(row);
}
}
}
Form2 frm = new Form2(dtItems);
frm.ShowDialog();
}
In Form2 copy this code:
public Form2(DataTable dtIt)
{
dtItems = dtIt;
InitializeComponent();
}
private void AddEmptyRows()
{
for (int i = 1; i <= 5; i++)
{
dataGV.Rows.Add();
}
}
private void Form2_Load(object sender, EventArgs e)
{
AddEmptyRows();
for (int i = 0; i < dtItems.Rows.Count; i++) {
dataGV.Rows[i].Cells[0].Value = dtItems.Rows[i]["city_ID"];
dataGV.Rows[i].Cells[1].Value = dtItems.Rows[i]["city_Name"];
dataGV.Rows[i].Cells[2].Value = dtItems.Rows[i]["status"];
dataGV.Rows[i].Cells[3].Value = dtItems.Rows[i]["date"];
}
dataGV.Enabled = true;
}
I have 3 check boxes in each row of 8 total rows. I want to have the third checkbox in each row to get checked only when the first two checkboxes are unchecked. I do not want to write a checkRow() method for each row.
What is the best way to go about it?
private void checkRow()
{
for (int i = 0; i < 8; i++)
{
var arraylist = new[] { checkbox1, checkbox2, checkbox3 };
if (checkbox1.Checked || checkbox2.Checked)
{
arraylist[2].Checked = false;
}
else
arraylist[2].Checked = true;
}
}
private void checbox1_CheckedChanged(object sender, EventArgs e)
{
checkRow();
}
private void checbox2_CheckedChanged(object sender, EventArgs e)
{
checkRow();
}
private void checbox3_CheckedChanged(object sender, EventArgs e)
{
checkRow();
}
In response.
private void checkRow()
{
var arraylist = new[] { checkEdit1, checkEdit2, checkEdit3 };
var arraylist1 = new[] { checkEdit4, checkEdit5, checkEdit6 };
var arraylist2 = new[] { checkEdit7, checkEdit8, checkEdit9 };
var array = new[] { arraylist, arraylist1, arraylist2 };
for (int i = 0; i < 8; i++)
{
//if checkedit1 or checkedit2 is checked the checkedit3 should not be checked
if (array[i]....Checked || array[i]....Checked)
{
arraylist[i]...Checked = false;
}
else
arraylist[i]...Checked = true;
}
}
I was trying to do something like this so that I dont have to write the checkRow() for each row
You should use the same method as the handler for all three delegates.
chkbox.CheckedChanged += new EventHandler(chkbox_CheckedChanged);
chkbox2.CheckedChanged += new EventHandler(chkbox_CheckedChanged);
chkbox3.CheckedChanged += new EventHandler(chkbox_CheckedChanged);
private void chkbox_CheckedChanged(object sender, EventArgs e)
{
// do your stuff here
}
Assuming you're not using a DataGridView or other way of organizing them into logical rows, why don't you do the following:
Store the checkboxes in an array so you have easy access to them.
CheckBox[,] checkArray = new CheckBox[8,3]...
Store the row index in the Tag property of the first and second checkboxes.
checkBox01.Tag = 0;
checkBox02.Tag = 0;
checkBox11.Tag = 1;
checkBox12.Tag = 1;
Have all the first and second checkboxes point to the same event handler:
checkBox01.CheckedChanged += new EventHandler(aCheckBox_CheckedChanged);
checkBox02.CheckedChanged += new EventHandler(aCheckBox_CheckedChanged);
checkBox11.CheckedChanged += new EventHandler(aCheckBox_CheckedChanged);
checkBox12.CheckedChanged += new EventHandler(aCheckBox_CheckedChanged);
In the event handler, you now know exactly which check box to update and no longer have to loop:
private void aCheckBox_CheckedChanged(object sender, EventArgs e)
{
int rowIndex = (int)((CheckBox)sender).Tag;
checkArray[rowIndex,2].Checked = !(checkArray[rowIndex,0].Checked ||
checkArray[rowIndex,1].Checked);
}
You can also do this using string lookups with the checkbox name, but it is surely slower and is a pain to refactor later if you choose to rename the checkboxes.
I am dynamically adding a bunch of controls to a form. Each control calls the same method, and in that method I need to know the array index of the the control that performed the action.
CheckBox[] myCB = new CheckBox[100];
int i;
for (i = 0; i < 100; i++)
{
myCB[i] = new CheckBox();
myCB[i].Text = "Clicky!";
myCB[i].Click += new System.EventHandler(dynamicbutton_Click);
tableLayoutPanel1.Controls.Add(myCB[i]);
}
private void dynamicbutton_Click(Object sender, System.EventArgs e)
{
label1.Text = sender.???array index property???.ToString();
}
So if I click myCB[42] label1 will read "42" Of course, if there is an easier way to handle dynamic controls I'd appreciate pointers.
private void dynamicbutton_Click(Object sender, System.EventArgs e)
{
label1.Text = Array.IndexOf(myCB, (CheckBox)sender).ToString();
}
Control's should have a Tag property. Maybe you can attach the index to the Tag. You will incur boxing though...
int j = i;
myCB[i].Click += delegate(object sender, EventArgs e) {
// here you can use "j"
};
One obvious solution would be to set the tag:
CheckBox[] myCB = new CheckBox[100];
for (int i = 0; i < myCB.Length; i++)
{
myCB[i] = new CheckBox();
myCB[i].Text = "Clicky!";
myCB[i].Click += new System.EventHandler(dynamicbutton_Click);
myCB[i].Tag = i;
tableLayoutPanel1.Controls.Add(myCB[i]);
}
Then:
private void dynamicbutton_Click(Object sender, System.EventArgs e)
{
Control control = (Control) sender;
label1.Text = sender.Tag.ToString();
}
Another alternative is to capture the information in the event handler, most simply using a lambda expression or anonymous method:
CheckBox[] myCB = new CheckBox[100];
for (int i = 0; i < myCB.Length; i++)
{
int index = i; // This is very important, as otherwise i will
// be captured for all of them
myCB[i] = new CheckBox();
myCB[i].Text = "Clicky!";
myCB[i].Click += (s, e) => label1.Text = index.ToString();
tableLayoutPanel1.Controls.Add(myCB[i]);
}
or for more complicated behaviour:
CheckBox[] myCB = new CheckBox[100];
for (int i = 0; i < myCB.Length; i++)
{
int index= i; // This is very important, as otherwise i will
// be captured for all of them
myCB[i] = new CheckBox();
myCB[i].Text = "Clicky!";
myCB[i].Click += (s, e) => DoSomethingComplicated(index, s, e);
tableLayoutPanel1.Controls.Add(myCB[i]);
}
(where you declare DoSomethingComplicated appropriately).