What is the purpose and proper use of the max-length property on text fields?
The application I'm working on limits numeric fields to 6 characters... which doesn't work very well for entering millions of dollars... which is why I'm "fixing" it.
The max length property are not work in the Asp.Net TextBox control.
<asp:textbox ID="txComment" MaxLength="20" Width="90%" Columns ="5" Height="100px" TextMode ="MultiLine" runat="server"></asp:textbox>
I am trying to hide multiple textfields i have nested inside a div element. Here is an example of the div element and the script:
[Code]....
[Code]....
I have some text fields fields of my page say P1, say T1, T2, T3. I also have a link button in my page which links it to another page P2, which also has some textfields. I also have a link button which links it back to page P1.
When i fill in the text fields in my page P1 go to the next page P2 and try to return to P1. I loose the values in t1, t2, t3.
How to retain those values even if i am moving back and forth between these pages
I have a bunch of textfields on my aspx page, many of them have a few validators on them, such as required field, and 2 compare values (for a min and max). All is well with those, all the errors I have posting to a validation summary control that gets fired on a button press. I have it put the "*" in red next to the field with the issue as well, however I'm wondering if there is a way I can change the css class of the textfield through code behind when there happens to be an error present on that control.I know how to change the css class of an element through codebehind(c#) but my question is how do I get it to fire only if an error is thrown for it.
View 2 RepliesWe have a number of multi-line text fields on our pages for form submissions. On the backend of things, we have our stored procedures checking for html coding in those fields to help prevent sql injection. In some cases, someone that is completing the form without any malicious intent is copying and pasting from their word resume into our text fields and once they submit the page it fails because word uses html encoding for formatting and such. So is there a way to either prevent pasting in that way or maybe a way to submit the data to sql in plain text?
Just looking for the easiest solution so that the user doesnt have to do multiple things to submit their application. In order to get it to work for anyone having issues, is to have them copy and paste into "notepad" and then copy and paste from there to our form, which strips the html coding.
I have a web form for handling invoices which has a form view. When I'm in insert item template, I need to have various fields. Some of them are contract number, invoice number, register date and other that are easy to handle. But there is a dropdown list related with a table of prices (the table has price name, price initial payment, number of payments, amount of month fee and so on). So, when the dropdown is selected, fields related with price should get their values from price table, and then the user decides to keep them or type in new values. How can I get it done? Should I use a Dynamic populate extender or type all the code behind using SelectedIndexChanged method to populate price related controls?
View 2 RepliesI have a datagrid and I set up the paging based on how many rows there are like this
With dgBookings
.AllowPaging = True
.PagerStyle.Mode = PagerMode.NumericPages
.PagerStyle.PageButtonCount = 5
.PageSize = 5
End With
Is there a way to set the horizontal-align in the code too I tried adding this
.PagerStyle.HorizontalAlign = Right
and I get this errorArgument not specified for parameter 'Length' of 'Public Function Right(str As String, Length As Integer) As String'.
what is the use of delegates. why we use delegates.
View 1 Replieswhat i want to do is to get the current ip i have (with a site as, http://whatismyip.com/) and send it to paypal sandbox so i can get a response (of course i haven't started the paypal code but i first need to be able to get a communication from paypal,non?)Ok the problem is that if i start a new web site on IIS, hit the current ip, i get my router administration console as a response.I have tried to change the port on a new site to 81 or 82 or 83 but i get a page not found.
View 11 Replies<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" onrowediting="GridView1_RowEditing">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="btnEdit" runat="server" Text="Edit" CommandName="Edit" />
<asp:Label ID="lblFirstColumn" runat="server" Text='<%# Eval("FirstColumn") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:Label ID="lblEditMode" runat="server" Text="This is Edit mode"></asp:Label>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
protected void Page_Load(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add("FirstColumn", typeof(int));
dt.Rows.Add(100);
GridView1.DataSource = dt;
if (!IsPostBack)
GridView1.DataBind();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
GridView1.DataBind();
}
If I change if (!IsPostBack) GridView1.DataBind(); to GridView1.DataBind(); and try to put GridView into Edit mode by clicking btnEdit, then I get the exception: Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. But if I set EnableEventValidation to false, then GridView1 won't enter edit mode ( ie - GridView1_RowEditing doesn't get called ). BTW - same problem also occurs with other databound controls ( DataList, DetailsView ) Page. EnableEventValidation gets or sets a value indicating whether the page validates postback and callback events. When the ableEventValidation property is set to true, ASP.NET validates that a control event originated from the user interface that was rendered by that control. A control registers its events during rendering and then validates the events during postback or callback handling.
a) Why must postback and callback events be evaluated? and how exactly does evaluation happen?
b) Why would calling GridView1.Databind() on each postback cause exception when trying to put it into edit mode?
c) I also don't see any reasons why disabling EnableEventValidation prevents GridView from entering edit mode?! Thus why did.
Can anyone tell me what does CAPTCHA do as far as security issue is concerned?Registration form of many sites have this field but how it works?
View 5 Repliesi want to know what is purpose of using masterpage?
View 5 Repliesi would like to know what the StringWriter Class is about and when we should use it.
View 2 Repliesfound a .gpState file in the folder,What is the purpose of gpState file?
View 2 Repliespurpose and mechanisms of the postback event? I am becoming very confusined when reading and am hoping that someone could explain it to a beginner.
View 17 RepliesWhat is the purpose of BrowserFile1.browser?
How to use it?
What is the purpose of Handler (.ashx files) and what is the use ?
can i get any sample ?
What is the purpose of the PropertySpecified pattern used by XML Serialization ?
View 1 RepliesI have a problem with URL of my application..................
I want to rewrite my url for security purpose......Like....
suppose my application URl is .....http://localhost/MyApplication/Product.aspx
But i want to change this url with......... http://localhost/MyApplication/MyProducts
In documentation I have read:
„Use the PostBackTrigger control to enable controls inside an UpdatePanel to cause a postback instead of performing an asynchronous postback."
I made simple application and I do not see difference between using PostBackTrigger and standard postback.
I have three buttons: two inside update panel and one outside update panel. When I click btnUpdateAsync in event handler I set text property of lblUpdatePanel and lblNoUpdatePanel and only lbl that is inside update panel is chaned if web browswer - so this is ok.
Whant I click btnUpdateInUpdatePanelSync all page is refreshed and both lablels are changed in web browser.
When I click btnUpdateOutsideUpdatePanel I see the same behavior.
If I used button that is not associated with PostBackTrigger I would get the same behavior - so what is the purpose of PostBackTrigger?
This is my app:
[Code]....
protected void Page_Load(object sender, EventArgs e)
{
}
protected void LinkButton1_Click(object sender, EventArgs e)
{
}
protected void btnUpdateAsync_Click(object sender, EventArgs e)
{
lblUpdatePanel.Text = "btnUpdateAsync_Click";
lblNoUpdatePanel.Text = "btnUpdateAsync_Click";
}
protected void btnUpdateInUpdatePanelSync_Click(object sender, EventArgs e)
{
lblUpdatePanel.Text = "btnUpdateInUpdatePanelSync_Click";
lblNoUpdatePanel.Text = "btnUpdateInUpdatePanelSync_Click";
}
protected void btnUpdateOutsideUpdatePanel_Click(object sender, EventArgs e)
{
lblUpdatePanel.Text = "btnUpdateInUpdatePanelSync_Click";
lblNoUpdatePanel.Text = "btnUpdateInUpdatePanelSync_Click";
}
i have to implement for online payment getting for donation for a social community
View 1 RepliesDuring a recent interview the following question was asked.
- A Master page which contains
- An ASPX web form page which contains
- A Web User Control inside the page which contains
- A button to fire some code in a button_click event
The Init Event will fire (Inner Most to Outer Most)
aspx.page Begin Init
-> Inside user control Page_Init
-> Inside master page Page_Init
-> Inside lifecycle page Page_Init
aspx.page End Init
and Load Event will fire
aspx.page Begin Load
-> Inside lifecycle page Page_Load
-> Inside master page Page_Load
-> Inside user control Page_Load
aspx.page End Load
Why does ASP.NET framework support different execution order in Load() and Init().This was the question asked in interview.I have no idea about what the interviewer expecting from me.
If you have a very large stored procedure, is it okay to just use the commands just once in the script?
ANSI_NULLS ON and QUOTED_IDENTIFIERS ON?I really don't understand the purpose of these commands?
can anyone make it clear the main purpose of action attribute of form tag in html page?
View 2 Replies