I have the following code in my .aspx file:
<asp:TextBox ID="txtSearch" runat="server" Width="278px"></asp:TextBox>
<asp:Button ID="btnSearch" runat="server" Text="Search" AutoPostBack="true" />
When I click on the btnSearch button it does an AutoPostBack.
What my goal is that if btnSearch was clicked, I would then capture the value of txtSearch or else I would not
How do I code such that if btnSearch was clicked on AutoPost I can flag it.
First, a Button does not have an AutoPostBack property. It posts back always.
Second, you can simply handle it's Click event and read the txtSearch.Text property:
<asp:TextBox ID="txtSearch" runat="server" Width="278px"></asp:TextBox>
<asp:Button ID="btnSearch" runat="server" Text="Search" OnClick="btnSearch_Click" />
codebehind:
protected void btnSearch_Click(Object sender, EventArgs e)
{
string search = txtSearch.Text;
// ...
}
Related
i wrote a code to show varified as he enters eany data. so i have 2 button to varify and then close. with label to display whether his email id is varified or not...
the code is
<asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="Panel1" TargetControlID="btn"
CancelControlID="btnClose" BackgroundCssClass="modalBackground" >
<asp:Label ID="Label1" runat="server" Text="Enter Your Registered Email Id"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Label ID="Label2" runat="server" Text="Label" ></asp:Label>
<asp:Button ID="Button2" runat="server" CssClass="btn btn-info" OnClick="Button2_Click" Text="Varify" />
<asp:Button ID="btnClose" runat="server" Text="Close" />
code behind code is..
protected void Button2_Click(object sender, EventArgs e)
{
Label2.Visible = true;
Label2.Text = "Valid User";
Label2.ForeColor= System.Drawing.Color.Green;
//ScriptManager.RegisterStartupScript(this, this.GetType(), "Pop", "showModal()", true);
// ModalPopupExtender1.Show();
}
but as i click on Button2 it closes the model..then i have to open again to see the output...I want to show the label text with out closing the ModalPopupExtender...Help me
I think postback cause this. I don't know so much about ModalPopupExtender but I can recommend you to use Jquery for button2 click and in click event make an ajax call and check whether your email is valid or not.
I've 2 radio buttons in a user control and control is registered to the page. When i click on the radio button, the event(CheckChanged) is not firing.
<asp:View ID="viewfirst" runat="server">
<asp:UpdatePanel ID="updatepanel1" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:RadioButton ID="radio1" Text="Yes" Enabled="true" runat="server" />
<asp:RadioButton ID="radio2" Text="No" Enabled="true" runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
</asp:View>
Below is code in behind file of the control.
Protected Sub radio1_CheckedChanged(sender As Object, e As EventArgs) Handles radio1.CheckedChanged
//
//
End Sub
It seems everything looks good, but something is wrong. Can you please let me know.
Set autopostback=true for checkbox - This will trigger the event
UpdateMode=conditional and ChildrenAsTriggers=false for the UpdatePanel - so when you trigger checkbox, it won't trigger full postback
You have to set the event handler of each radio button to OnCheckChanged and put them in the same RadioGroup (GroupName) so they do not fire together. Remember to set AutoPostBack = true for each radio button. Set only one radioButton as checked = true. I can see your code has both checked. Something like this...
The aspx page:
<asp:RadioButton id="radioButton1" runat="server" GroupName="btnGrp" Text="Button 1" AutoPostBack="true" Checked="true" OnCheckedChanged="radioButton1_CheckedChanged"></asp:RadioButton>
<asp:RadioButton id="radioButton2" runat="server" GroupName="btnGrp" Text="Button 2" AutoPostBack="true" OnCheckedChanged="radioButton2_CheckedChanged"></asp:RadioButton>
The code-behind (aspx.cs) page:
protected void radioButton1_CheckedChanged(object sender, EventArgs e)
{
// Your code here
}
protected void radioButton2_CheckedChanged(object sender, EventArgs e)
{
// Your code here
}
Hope this helps!
I'm using Visual Studio 2010 with framework 3.5 and Ajax Control Toolkit .NET 3.5.
I working on a asp.net web forms website.
On a form I have this: a textbox, an imagebutton, a button, a calendar and a requiredfieldvalidator:
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<p>
<br />
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</asp:ToolkitScriptManager>
<asp:Label id="Label3" runat="server">Date</asp:Label>
<asp:textbox id="txtInitialDate" runat="server" Width="75px" MaxLength="10"></asp:textbox>
<asp:ImageButton ID="imgBegin"
ImageUrl="~/images/Icon1.jpeg" runat="server"
AlternateText="" Height="24px" Width="24px" />
<asp:CalendarExtender ID="CalendarExtender1" runat="server"
TargetControlID="txtInitialDate"
PopupPosition="BottomLeft" PopupButtonID="imgBegin"
>
</asp:CalendarExtender>
<asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" ErrorMessage="*" ControlToValidate="txtInitialDate"
Display="Dynamic"></asp:requiredfieldvalidator>
<asp:button id="Button2" runat="server" Text="Send" onclick="Button2_Click"></asp:button>
</asp:Content>
code behind:
override protected void OnInit(EventArgs e)
{
Button2.Attributes.Add("onclick", "javascript:" + Button2.ClientID + ".disabled=true;" + "javascript:" + Button2.ClientID + ".value='Processing.';" + this.GetPostBackEventReference(Button2) + ";");
base.OnInit(e);
}
protected void Button2_Click(object sender, EventArgs e)
{
string a = "some_value";
}
The interaction here is that the user clicks on the ImageButton, the calendar shows, the user clicks on a date and then hits the button.
The problem:
If I run the website and click on the ImageButton first and pick a date, then when the button is clicked no events are fired.
But if I comment the code of the validator:
<asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" ErrorMessage="*" ControlToValidate="txtInitialDate"
Display="Dynamic"></asp:requiredfieldvalidator>
Then the events are fired correctly.
I want to be able to use the requiredfieldvalidator, but I don't want it to create conflict with the button
Why is this happening and How can I solve this?
Thanks...
Use CausesValidation=False in the image button markup:
<asp:ImageButton ID="imgBegin" CausesValidation="False" ImageUrl="~/images/Icon1.jpeg" runat="server" Height="24px" Width="24px" />
You can add that javascript for Button2 in the markup also (instead of OnInit code-behind). Just use OnclientClick attribute in the Button2 mark up
Web.UI.Controls.TextBox
in my aspx page i have used-
<asp:TextBox ID="TextBox1" runat="server" OnTextChanged="tmaintextchanged" ></asp:TextBox>
in my code behind :
<asp:Label ID="show" runat="server" ></asp:Label >
protected void tmaintextchanged(object sender, EventArgs e)
{
show.Text = "working";
}
when I am executing this ,Why is the text of label "show" not changing.Kindly help. Am i missing any configuration to the Text box.
You need to set autopostback on TextBox control:
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true" OnTextChanged="tmaintextchanged" ></asp:TextBox>
Update
see this post:
How do I make a Textbox Postback on KeyUp?
I have got a dropdown list populated with products from a product table. I have a button named ADD Product, so when the user wants to add a new product instead of selecting product from the drop down list, one should click on add new then panel 1 should show which includes a textbox. Panel1 visibility is set to false by default and it should be visible when the user clicks on the button. Also I want a validation on dropdown list and textbox(if panel is visible). Below is the code which is not working :
<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList>
<%--<asp:TextBox ID="txtMake" runat="server" CssClass="txtStyle"></asp:TextBox>--%>
<asp:Button ID="btnAdd" runat="server" />
<asp:Panel ID="panel1" Visible="false" runat="server"><asp:TextBox ID="txtAddnew"></asp:TextBox></asp:Panel>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="Please Select a Product" ValidationGroup="insert" ControlToValidate="DropDownList1" ForeColor="Red"></asp:RequiredFieldValidator><br />
codebehind:
protected void btnAdd_Click(object sender, EventArgs e)
{
panel1.Visible = true;
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
MultiView1.ActiveViewIndex = 0;
DropDownList1.DataSource = caravans.GetProductNames();
DropDownList1.DataBind();
}
}
You can use this concept for validation on dropdownlist. I am given you an example please check this...
<asp:DropDownList runat="server" ID="ddl">
<asp:ListItem Value="-1" Text="Select"></asp:ListItem>
<asp:ListItem Value="1" Text="One"></asp:ListItem>
<asp:ListItem Value="2" Text="Two"></asp:ListItem>
</asp:DropDownList>
<asp:RegularExpressionValidator ID="reg1" runat="server" ControlToValidate="ddl"
Display="Dynamic" ErrorMessage="Select Proper" SetFocusOnError="true" Text="Select Proper"
ValidationGroup="check" ValidationExpression="^\d{0,5}$" />
<asp:Button ID="btn" runat="server" ValidationGroup="check" Text="Submit" />