I have a textbox "txtName" listbox "listNames" and button "btn_Add". Now i want to populate the textbox with the name selected from the listbox on button click.
I am using asp.net and c#. please help.
do as below
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
//load listbox items here
}
}
if you load data on page load, in every post back your listbox will load again and again, you will lost the selection. Do as above to load data only first time page load. now you can get the list box selected items in button click event.
But this in your button.
txtName.Text = listNames.SelectedItem.Text;
Try this,
On code behind button click event.
txtText.Text = drpDwn.SelectedValue; // This is for ID
txtText.Text = drpDwn.SelectedItem.Text; //This is for Text
Put this on your code behind
protected void Page_Load(object sender, EventArgs e)
{
listNames.Items.Add("listboxItemValue1","Listbox Item Text 1");
listNames.Items.Add("listboxItemValue2","Listbox Item Text 2");
}
protected void btn_Add_Click(object sender, EventArgs e)
{
txtName.Text = listNames.SelectedItem.Text;
}
and this on your Asp,net page
<asp:button ID="btn_Add" runat=server" OnClick="btn_Add_Click" />
Use
textbox.Text= listbox.SelectedItem.ToString();
Related
Pls Help Me
The problem here is that i want the empty data template to be Display after the button search has been click but right now every time i open the page, it will show the empty data template before do any searching ....
if(!IsPostBack)
{
//put ur gridview connection here;
}
protected void Page_Load(object sender, EventArgs e)
{
grid1.DataSource = sqlboxfile;
DataBind();
grid2.Visible = false;
}
In .NET i have a gridview which has to display on the mainpage with default settings. So i put it in pageload code. In the same page i have a "List" button; people choose date etc. and when they press the button gridview loads data from another stored procedure. I put that code under List button event. But after people press List button and gridview comes with the needed data, if they press something else (because of page refresh itself) gridview turns back to default settings.
How do i keep the gridview with wanted data?
protected void Page_Load(object sender, EventArgs e)
{
opsbelgegridview.DataSource = DB.OpsHavuzGetir();
opsbelgegridview.DataBind();
protected void listelebtn_Click(object sender, EventArgs e)
{
opsbelgegridview.DataSource = DB.OpsHavuzDetayListeleBtn(tarih1.ToString("yyyy-MM-dd"), tarih2.ToString("yyyy-MM-dd"), durumdd.SelectedItem.Text.ToString(), islemtipdd.SelectedItem.Text.ToString());
opsbelgegridview.DataBind();
You can use IsPostBack() and only load the initial grid on the first load of the page. Then if the grid data changes it will stay.
private void Page_Load()
{
if (!IsPostBack)
{
opsbelgegridview.DataSource = DB.OpsHavuzGetir();
opsbelgegridview.DataBind();
}
}
I have this web application which is supposed to move rows up and down on button click, but it does only when I close the webpage and re run my program from Visual Studio.
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack)
{
DataView view = (DataView)SqlDataSource1.Select(
DataSourceSelectArguments.Empty);
DataTable result = view.ToTable();
}
}
Is this all I need ?
You can use the CommandName to trigger the functionality of your button clicks.
Example: http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.linkbutton.commandargument.aspx
You need to use a button click event. You logic is currently in the page load event, that's why its only firing once
You could also remove the if postback which would also work but is not the recommended solution
protected void Page_Load(object sender, EventArgs e)
{
DataView view = (DataView)SqlDataSource1.Select(DataSourceSelectArguments.Empty);
DataTable result = view.ToTable();
}
I am dynamically creating link buttons on user control using a place holder and the eventhandler attached to the link button click+=new Event(Button_Click) is not firing
Thanks in Advance
Code Snippet of
protected override void OnInit(EventArgs e)
MenuListPlaceHolder.Controls.Add(new LiteralControl("<li>"));
ctrl.ID = this.UniqueID + (nCounter++).ToString();
ctrl.Text = cardType.Name;
ctrl.Click += new EventHandler(this.CardName_Click);
MenuListPlaceHolder.Controls.Add(ctrl);
MenuListPlaceHolder.Controls.Add(new LiteralControl("</li>"));
When clicked post back event is fired but not executing CardName_Click
You have to attach it on Page_Load event
like so:
protected void Page_Load(object sender, EventArgs e) {
this.Btn.OnClick+=new Event(Button_Click)
}
you should check it: here to learn about page cycle
I have some code which involves dynamically creating new buttons, when a user clicks on a particular button. However the EventHandlers defined for these dynamically created buttons do not execute when I click on any one of them. Here is the errant code snippet:
protected void Page_Load(object sender, EventArgs e)
{
.......
btn1.Click += new EventHandler(this.btn1_Click);
.......
}
protected void btn1_Click(object sender, EventArgs e)
{
.......
LinkButton btn2 = new LinkButton();
btn2.Click += new EventHandler(this.btn2_Click);
.........
}
protected void btn2_Click(object sender, EventArgs e)
{
.......
}
The code execution never enters btn2_Click(). Am I doing something wrong here?
Try declare LinkButton btn2 as global variable and and wire the event btn2.Click += new EventHandler(this.btn2_Click) as the controls are created.
btn2 disappears as soon as you leave the btn1 event handler. It's a local variable, and goes away as soon as it's out of scope.
Did you ever see the second button? Did you click on it? If so, then you clicked on the wrong button. This one you added never appeared on your page.
In order for a control to become visible (and to render into HTML), it must be placed inside of the Controls collection of a visible control. You're not doing anything with it.