I have used the below code to dynamically create textboxes by giving the total number of textboxes initially. After i enter values to these textboxes, how can i fetch the values from it. Like if i give count as 3, 3 textboxes will be created. Now, i enter data to each textbox. How can i read the values i entered into these texboxes.
int a = 1;
public Form1()
{
InitializeComponent();
}
public System.Windows.Forms.TextBox AddNewTextBox()
{
System.Windows.Forms.TextBox txt = new System.Windows.Forms.TextBox();
this.Controls.Add(txt);
txt.Top = a * 25;
txt.Left = 100;
txt.Name = "txt" + this.a.ToString();
txt.Text = "TextBox " + this.a.ToString();
a = a + 1;
return txt;
}
private void button1_Click(object sender, EventArgs e)
{
int i;
int count = Int16.Parse(counttxt.Text.ToString());
for (i = 1; i <= count; i++)
{
AddNewTextBox();
}
}
Hold a reference to the dynamically generated TextBox in a variable of type array or list.
Beside that if u want the value from TextBox that was named txt1
string value = this.Controls["txt1"].Text
string allTextBoxValues = "";
foreach (Control childc in Controls) {
if (childc is TextBox && childc.Name.Contains("txt"))
allTextBoxValues += ((TextBox)childc).Text + ",";
}
Related
in this program, when the Recall button (recallBtn_Click()) is clicked, it calls a method (that calculates directions) from another class which should then call the showPath() method. the show path method should then display its output in a textBox. But the values don't show even though i can see from debugging that the values are being sent to the text box. can anybody tell me where i went wrong?
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
storeRetSelect.SelectedIndex = 0;
PrioritySelect.SelectedIndex = 0;
}
public void showPath(List<PathFinderNode> mPath)
{
var T = new Form1().directionsTextBox;
foreach (PathFinderNode node in mPath)
{
if ((node.X - node.PX) > 0) { T.Text += "Right" + System.Environment.NewLine ; }
if ((node.X - node.PX) < 0) { T.Text += "Left" + System.Environment.NewLine; }
if ((node.Y - node.PY) > 0) { T.Text += "UP" + System.Environment.NewLine; }
if ((node.Y - node.PY) < 0) { T.Text += "Down" + System.Environment.NewLine; }
}
}
private void recallBtn_Click(object sender, EventArgs e)
{
var path = new pathPlan();
string desigString = inputTextBox.Text;
int[] desig = new int[3];
for (int i = 0; i < desigString.Length; i++) { desig[i] = (int)char.GetNumericValue(desigString[i]); }
path.Recall(desig[1], desig[2], (-1) * desig[0]);
}
}
With this line you are initialising a new object and get the reference of the textbox there.
var T = new Form1().directionsTextBox;
But I assume you want to use the textbox of the form which is allready open. Change the line to the following to access the textbox of the current object.
var T = this.directionsTextBox;
I Create dynamic text box on button click inside panel and store number
and want to retrieve its text and make total of that number how can i do that?
Following is my code for text box generation
private void btnMaterialAdd_Click(object sender, EventArgs e)
{
TextBox[] txtTeamNames = new TextBox[100];
txtTeamNames[i] = new TextBox();
string name = "TeamNumber" + i.ToString();
txtTeamNames[i].Location = new Point(1, i * 30 );
txtTeamNames[i].Width = 30;
txtTeamNames[i].Name = "ID" + i;
txtTeamNames[i].Visible = true;
int num = i + 1 ;
txtTeamNames[i].Text = num.ToString();
panel1.Controls.Add(txtTeamNames[i]);
}
How to count total value of each text box and display?
Get rid of the Array and use a List at Class Level (not a local variable in your method):
private List<TextBox> TextBoxes = new List<TextBox>();
private void btnMaterialAdd_Click(object sender, EventArgs e)
{
TextBox tb = new TextBox();
int i = TextBoxes.Count + 1;
tb.Location = new Point(1, i * 30);
tb.Width = 30;
tb.Name = "ID" + i;
tb.Text = i.ToString();
TextBoxes.Add(tb);
panel1.Controls.Add(tb);
}
Now you can iterate over that List when to get a total:
private void btnTotal_Click(object sender, EventArgs e)
{
int value;
int total = 0;
foreach (TextBox tb in TextBoxes)
{
if (int.TryParse(tb.Text, out value))
{
total = total + value;
}
else
{
MessageBox.Show(tb.Name + " = " + tb.Text, "Invalid Value");
}
}
MessageBox.Show("total = " + total.ToString());
}
i have made a mistake of re-inventing the wheel. There are options
but somehow i like the feel of this.
Sorry but don't have enough rep to post an image.
This is how the form looks like:
SNO.-------ITEMS--------FROM--------TO---------QUANTITY // labels
[ 1 ]-------[-----------▼]---[--------]----[--------]------[-------------] {NEW} {DELETE} //textboxes and buttons
I've got the 'new' button click event to generate a row, and serial number to be automatic
and inserted the items into the collections from Properties panel.
Delete button deletes an entire row and shifts both the button up on Y position.
I need to assign the value of quantity [(TO - FROM ) + 1] in the QUANTITY text boxes,
for which i have the code as :
public void print_quant(object Sender, EventArgs e)
{
TextBox quanty;
quanty = (TextBox)this.Controls.Find("QUANTITY" + (count), true)[0];
calculate_quant(this, e);
quanty = result;
}
public static string result;
public string calculate_quant(object sender, EventArgs e)
{
TextBox sfrom;
sfrom = (TextBox)this.Controls.Find("SFRM" + count, true)[0];
TextBox sto;
sto = (TextBox)this.Controls.Find("STO" + count, true)[0];
TextBox quan;
quan = (TextBox)this.Controls.Find("QUANTITY" + count, true)[0];
//if (!string.IsNullOrEmpty(sfrom.Text) && !string.IsNullOrEmpty(sto.Text))
{
int to = Convert.ToInt32(sto.Text);
int from = Convert.ToInt32(sfrom.Text);
int quantity = (to - from) + 1;
result = quantity.ToString();
quan.Text = result;
}
return result;
}
count is initialized at 1 on form load, keeps increasing with number of rows
the same code works in the delete row method
public void delete_row(object sender, EventArgs e) //function to delete a row
{
TextBox snum;
snum = (TextBox)this.Controls.Find("SNO"+count, true)[0];
snum.Dispose();
...//delete other row elements
}
please help me figure out why it doesnt work for the print_quant / calculate_quant methods
I made some changes to your code. I changed the return on your calculate method to a string, and added a quanty.Text=calculatemethod line to your print method
public void print_quant(object Sender, EventArgs e)
{
TextBox quanty;
quanty = (TextBox)this.Controls.Find("QUANTITY" + (count), true)[0];
//add this line
quanty.Text = calculate_quant(this, e).ToString();
}
public static string result;
//change this
//public void calculate_quant(object sender, EventArgs e)
//to
public string calculate_quant(object sender, EventArgs e)
{
TextBox sfrom;
sfrom = (TextBox)this.Controls.Find("SFRM" + count, true)[0];
TextBox sto;
sto = (TextBox)this.Controls.Find("STO" + count, true)[0];
//this isn't being used here
//TextBox quan;
//quan = (TextBox)this.Controls.Find("QUANTITY" + count, true)[0];
//if (!string.IsNullOrEmpty(sfrom.Text) && !string.IsNullOrEmpty(sto.Text))
{
int to = Convert.ToInt32(sto.Text);
int from = Convert.ToInt32(sfrom.Text);
int quantity = (to - from) + 1;
return quantity.ToString();
}
}
Edit
try this.
Create a usercontrol and make it look exactly like one of your rows.
add a property variable for each of the boxes
//whenever you Sno="something" the textbox will automatically be updated.
private string _Sno="00000";
public string Sno{get{return _Sno;}set{_sno=value; SnoTextBox.Text=value;}}
do this for each of your textboxes.
on your main form now you can add a flowpanel, they a bit tricky at first. when you add your new Usercontrol to it, they will automatically be added from the top down, or up, or however you set it up.
When you want to add a new row, just add your new Usercontrol to the flowpanel
FlowPanel flowPanel =new FlowPanel();
FlowPanel.Controls.Add(new myUserControl());
to delete
FlowPanel.Controls.RemoveAt(2);
This is really poorly written, but I am out of time. Either ignore me altogether, or try to figure it out. Sorry I couldn't be more help.
this worked for me
private void textBox_TextChanged(object sender, EventArgs e)
{
TextBox quant;
int x = count - 1;
string num = Convert.ToString(x);
quant = (TextBox)this.Controls.Find("QUANTITY" + x , true)[0];
TextBox to = (TextBox)this.Controls.Find("STO" + x, true)[0];
TextBox from = (TextBox)this.Controls.Find("SFRM" + x, true)[0];
string tovalue = to.Text;
int to1 = Convert.ToInt32(tovalue);
string fromvalue = from.Text;
int from1 = Convert.ToInt32(fromvalue);
int result = (to1 - from1) + 1 ;
if (result > 0)
{
string result1 = Convert.ToString(result);
quant.Text = result1;
}
}
after adding
STO.TextChanged += new System.EventHandler(textBox_TextChanged);
at the function that was generating the boxes where i needed to calculate :)
I have this code, which dynamically creates some textfields for me. k is taken from user btw.
for (int i = 0; i < k; i++)
{
TextBox t1 = new TextBox();
t1.Parent = groupBox2;
t1.Left = textBox2.Left;
t1.Top = textBox2.Top + (i + 1) * 40;
t1.Name = "text" + (i + 1);
t1.Enabled = true;
groupBox2.Controls.Add(t1);
}
What i want to do is, after this creating phase is done, when the user presses groupbox2's "OK" button, I want to take the created textfields' text properties, but so far I don't know how could this be done, since I gave textfields a name, I tried this but didn't work.
private void button3_Click(object sender, EventArgs e)
{
node1.name = textBox2.Text;
for (int i = 0; i < k; i++)
{
node1.array[i] = Convert.ToInt32("text"+(i+1).Text);
}
}
Any help would be nice, thanks.
Try this method:
private void button3_Click(object sender, EventArgs e)
{
node1.name = textBox2.Text;
for (int i = 0; i < k; i++)
{
TextBox txtBox = (TextBox)groupBox2.FindControl("text" + (i + 1));
if (txtBox != null)
{
node1.array[i] = txtBox.Text;
}
}
}
Loop through your text boxes in groupBox1 and get their names,Try this:
List<string> TextBoxesName=new List<string>();
foreach (Control item in groupBox1.Controls)
{
if (item is TextBox)
{
TextBoxesName.Add((item as TextBox).Text);
}
}
Set to your dynamic texboxes ID and than you can do groupBox2.FindControl("dynamic_texbox_id") to get your text box
Easiest solution is to put your listboxes in a collection of some sort
List<ListBox> listboxes = new List<ListBox>();
for (...)
{
...
listboxes.add(listbox);
}
Then you can refer back to them whenever you want
Or since you're adding them to a groupbox, why not go through that collection?
HI I have requirement that
1) display given no.of textboxes dynamically and save to DB
2) if I change the number then new textboxes should append to UI
EX: TextBox AddButton
If I give 2 in textbox and click on add
Then 2 textboxes should appear. I filled some data in those textboxes. Now When I change the value 2 to 5 then 3 more textboxes should append(condition:old textboxes data should retain)
If the second value is less than or equal to first value then do nothing.
My code is
void Append()
{
string Data = string.Empty;
TextBox tb;
if (Convert.ToInt32(hdnCnt.Value) < Convert.ToInt32(txtNoofGames.Text))
{
for (int i = 0; i < Convert.ToInt16(txtNoofGames.Text); i++)
{
if (i <= Convert.ToInt32(hdnCnt.Value))
{
tb = (TextBox)Form.FindControl("txtGame1");
Data = tb.Text;
}
TextBox Newtb = new TextBox();
Newtb.ID = "txtGame" + i;
Form.Controls.Add(Newtb);
if (i <= Convert.ToInt32(hdnCnt.Value))
{
Newtb.Text = Data;
}
}
}
}
protected void btnAdd_Click(object sender, EventArgs e)
{
if (hdnCnt.Value != "")
Append();
hdnCnt.Value = txtNoofGames.Text;
for (int i = 0; i < Convert.ToInt16(txtNoofGames.Text); i++)
{
TextBox tb = new TextBox();
tb.ID = "txtGame" + i;
Form.Controls.Add(tb);
}
}
I am getting exception "object reference not set to an instance of object" at Data = tb.Text; in append method.
You didn't initialize it from the looks of it
TextBox tb = new TextBox();
Hope that helps,
Instead of Form.Controls.Add(tb);
Please try with Page.Form.Controls.Add(tb);