Hello I am beginner in asp.net webforms and i want to copy text of textbox in another textbox when i click in button
my code is :
protected void Button2_Click(object sender, EventArgs e)
{
TextBox15.Text = TextBox6.Text;
}
when i fill TextBox6 and click button nothing show in TextBox15
Try to use IsPostBack property in the pade_load event handler to prevent re-validation of the page every time you click the button.
if (!IsPostBack)
{
//do nothing
}
By the way code of your button click will remain as it is, dont change anything of it, just write the above code on the page load.
I hope it helps
Related
I want to create 2 simple textbox in aspx file and .cs, whenever I click a button, it will pass the value to another textbox. as simple as this:
private void Click(object sender, EventArgs e)
{
textbox1.text=textbox2.text;
}
However, the "enter" message doesn't pass to another textbox. please view the example below
do you have any idea how to do it?
You will need to do that in the button's click event, say you have a button called transfer, then create a click event called
private void Transfer_OnClick(......)
{
textbox1.text=textbox2.text;
}
That should be all you need, this is assuming you are using ASP.NET Webforms.
I'm creating form application on c# . I have dragged a textbox with some text in it.
private void textBox1_Click(object sender, EventArgs e)
{
}
Now what is the event for the onlick on textBox1 ?
I need to add this on that function textBox1.Clear();
P.S I searched everywhere. But all i can find is jquery and javascripts... No c#.
EDIT
I tried onfocus like below..but its not working
private void textBox1_OnFocus(object sender, EventArgs e)
{
MessageBox.Show("dsd");
}
If you want to do something when the control is clicked the handle the Click event, not the TextChanged event. Presumably you just double-clicked the control in the designer. That will only handle the default event. To handle other events, open the Properties window, click the Events button at the top and then double-click the appropriate event.
That said, is Click really appropriate? What if the user enters the TextBox using the Tab key? If what you actually want to do is act when the control gets focus then you should handle the Enter event.
You can handle OnFocus/GotGocus event in the TextBox, and clear the text in the textbox.
Hope this helps.
Actually i am dynamicaly creating two textboxes and two buttons inside a table using for loop. Now i want to write event handlers for these 2 buttons so that upon clicking on the button the text inside the respective texbox should be displayed in a new label. Also tell me why upon clicking the button after postback all the dynamic controls disappear. Kindly explain with some good example.
protected void Page_Load(object sender, EventArgs e)
{
.
.
Button Button1= new Button();
Button1.ID = "button1";
Button1.Text = "Button";
Button1.Click+=new EventHandler(Button1_Click);
this.form1.Controls.Add(Button1);
.
.
}
and handler method goes like this
protected void Button1_Click(object sender, EventArgs e)
{
//
}
The reason why after postback all the buttons disappear is, these controls are not created again in Page_Load event.
These controls were not in page markup initially, and while postback, dynamically created markups will not be retained due to stateless transfer
Go through ASP.NET Page life cycle for more information
Here is what I am trying to do in two simple steps:
1) New Row (trNewPost) which has table inside and controls in it to add new post or to update existing post.
Default Visible=false;
2) Add Button to make above row visible = true;
3) trMyPosts has Gridview in it and displays all the posts.
Default visible = true.
When user click on editing any row of the gridview (RowCommand event) I just want to hide this grid (trMyPosts) and show trNewPost.
That's all. events firing, but nothing happening.
I think you've got viewstate problem.
One of the things you can do is this :
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
// do things here
}
}
Because whenever anything happens, the page posts back. By encapsulating your Page_Load with ! Page.IsPostBack, you prevent those things from happening over and over again.
Now, if your variable is a global variable, you will have this same problem. Consider instead using a Session variable.
Also, I just wanted to show you this piece of code just in case :
protected void HideShowClicked(object sender, EventArgs e)
{
// toggle the visibility of the control
// (that is, if visible then hide, if hidden then show)
myControl.Visible = ! myControl.Visible;
}
I'd like give focus to a textBox after a Tab has been selected but no matter what I try it doesn't work. I've looked at similar questions here but they don't get me the results I need. Here is what Ive tried.
private void tabBDERip_Click(object sender, EventArgs e)
{
textBoxPassword.Focus();
}
and
private void tabAll_SelectedIndexChanged(object sender, EventArgs e)
{
if (tabAll.SelectedTab == tabBDERip)
{
textBoxPassword.Focus();
}
}
Can someone please tell me what I'm doing wrong?
Thanks
First thing the Click event of the TabPage control fires when the user clicks inside the TabPage not on the header so your SelectedIndexChanged event is the one you want to use.
I just tested code very similiar to yours:
private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
{
if (tabControl1.SelectedTab == tabPage2)
{
textBox4.Focus();
}
}
And it worked fine.
Is the password textbox not enabled or something like that?
If you try to call Focus() on a different control does that also not work?
If you set a breakpoint inside the SelectedIndexChanged code does it get hit?
Update: Interesting. If the breakpoint isn't getting hit (before the if) I would double check that your eventhandler is properly attached. Look in your designer.cs for something like:
this.tabControl1.SelectedIndexChanged += new System.EventHandler(this.tabControl1_SelectedIndexChanged);
Update: I put my working example at http://www.ccswe.com/temp/SO_TextBoxFocus.zip maybe looking at it will help you figure out where the issue is.
Update: The easier way to attach an event handler to a control on your form:
1: Select the Control to want to attach an event handler to and then click the Events icon (lightning bolt) in the Properties window.
alt text http://www.ccswe.com/temp/Attach_EventHandler_1.png
2: Find the event you want to attach to and double click to the right.
alt text http://www.ccswe.com/temp/Attach_EventHandler_2.png
3: A code stub will be automatically generated for you and the event will be attached in the designer.
alt text http://www.ccswe.com/temp/Attach_EventHandler_3.png
If you look at the properties window again you'll now see the name of the method that was generated.