Web Forms :: Why The "GroupName" Property Of RadioButton Control Changed After Render
Apr 19, 2010
I think I found some bugs on the asp.net 4 RadioButton control rendering.
Firstly, I don't understand why the "Value" property was removed from RadioButton control? What a reason?
Secondary, why the "GroupName" property of RadioButton control changed after render? This property must be a static!!! This situation is a same then we try to use the HtmlInputRadioButton. For example, if we have the aspx file like
[code]....
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Similar Messages:
Jul 22, 2010
So I've got three RadioButtons, They're not in a RadioButtonList because I need to add some textboxes next to each of them.I've added a GroupName, and on the front end they behave as expected. ONLY ONE appears checked at a time.However in the code, if I do:
RadioButton1.Checked = true;
RadioButton2.Checked = true;
RadioButton3.Checked = true;
I would expect only the last one, RadioButton3, to be checked, because they all belong to the same group. This is not the case. All three evaluate to true.... how can that be?
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Feb 23, 2011
After render group name comes in the name attribute with different name for each radiobutton in the gridview.
I tried to set all the names as same. But when we see the source in the browser it is unique.
How to change the name for all the radiobutton in the gridview as same.
protected override void Render(HtmlTextWriter writer)
{
System.IO.StringWriter sw = new System.IO.StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
ase.Render(htw);
htw.Close();
string h = sw.ToString();
RadioButton first = (RadioButton)gvAddOption.Rows[0].Cells[3].FindControl("rblValue");
string uniqGroupName = first.UniqueID;
uniqGroupName = uniqGroupName.Replace(first.ID, first.GroupName);
foreach (GridViewRow row in gvAddOption.Rows)
{
RadioButton val = (RadioButton)row.Cells[3].FindControl("rblValue");
string eachGroupName = val.UniqueID;
eachGroupName = eachGroupName.Replace(val.ID, val.GroupName);
//h.Replace("name="" + eachGroupName + """, "name="" + uniqGroupName + """);
h.Replace(eachGroupName, uniqGroupName);
}
writer.Write(h);
}
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Sep 6, 2010
I need 10 radiobuttons, but I do not want to use radiobutton list and I am not able to use Text property since I mark the Text for radiobutton in another row. All the radiobuttons' text are set as empty string. How can I get and set the value for the radiobuttons.
<div>
<div> </div>
<div>
<span>1</span>
<span>2</span>
<span>3</span>
</div>.....
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Dec 10, 2010
I need show/hide radiobutton control depends on boolean property
[Code]....
How to bind property visible?
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Jan 25, 2010
I have a radio buttonlist in my webpage with 2 list items, when I click the 2nd list item I want to change the visibility of a text box so it wore the code
protected void rbList_SelectedIndexChanged(object sender, EventArgs e)
{
if (rbList.SelectedIndex == 0)
{
txtPresentlyUsing.Visible = false;
}
if (rbList.SelectedIndex == 1)
{
txtPresentlyUsing.Visible = true;
}
}
and its working fine but the page got refreshed how can I avoid this if I want to use ajax how can I implement it?
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Feb 12, 2011
I've been watching a video on Scott Hanselmnn teaching MVC 2 tricks/tips. He mentions how MVC 2 by default uses ASP.NET Web Forms view engine to render the output of the views; he mentions that the web forms view engine is a little slower than it could be for MVC 2 since it generates a control tree and then outputs the HTML to the page (I hope I said that right).
I was wondering what he meant by web forms generating a code tree before outputting the HTML to the page. Does anyone have insight on the view engine of Web forms and the steps of the rendering process works for ASP.NET and MVC2?
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Apr 4, 2010
When I create buttons in my Details View using the AutoGenerateEditButton they are created with Links. Is there a way to change this to Buttons?
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Dec 20, 2010
I am working on a project where we want to keep a history of a particular object. On save I want a method on the object that will determine if it has changed so that I can call a method to save its current state to history. E.g. I populate a form from an object the user makes changes (or possibly not) and submits the from. I want to take my original object and a copy of that object that has been updated from the form and determine if it has changed at all. Additionally I may decide at some point that certain properties don't matter (e.g. if Name changes I won't track it).
I'm thinking the easiest/most flexible way to accomplish this would be if I could give the properties I care about a custom attribute [ChangeTracked] and then I could use reflection to get a list of all properties with that attribute and loop through them comparing A.property == B.property to determine if any have changed.
Would this work? Is there a significantly better/easier way to handle this, like some sort of built in method you can add to an object to determine if the values of any properties have changed? Whatever the solution some psudo code would be appreciated. Just as a point of clarification the solution needs to determine if the value I care about has actually changed not just if it has been assigned since it was created i.e. if I set Name="bob" and it was already "bob" before my assignment this does not count as a change.
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Sep 20, 2010
i have radiobuttons created dynamicly , what i need is if someone selects value 2 on a dropdown box the there must be only 2 radiobuttons selectable in a groupname . Is this possible ? I dont want to go with a checkbox becuase then all the checkboxes will be selectable .
And i cant set there attributes becuase they are dynamicly created
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Dec 1, 2010
I have two radio buttons that are part of a groupName. I am not sure how to go about getting the SelectedValue of the group via VB in my code behind. I am not abel to use a RadioButtonList as I have HTML code between the groped radio buttons.
Here is my code.
[Code]....
How do I get the selected value from the RadioButton GroupName=RadioButtonHousingQuestions above using VB code behind?
I have looked all over and most are saying use a RadioButtonList, but I can't in this case.
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Mar 17, 2011
i want to find control radio button list i have child control as listitem at runat server,i have id like i have 4 option e.g.option1,option2,option3,option4 i want to selected one of them.
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Sep 28, 2010
I use a GridView control to select the row to display within the FormView. The FormView contains a RadioButtonList to facilitate the selection of one of its values. My C# codebehind contains a "selected_index changed event to grab the values from any of the modified FormView controls. My problem is that it is not picking up the selected radio button. Here's some code:
[Code]....
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Mar 29, 2011
I have a wizard control handling multiple radiobuttonlists. This is done so a customer can make a selection on one radiobuttonlist then move onto the next one. Each radiobuttonlist pulls selections from table in a database. Each time a customer visits the page, I want them to make selections on each radiobuttonlist then have those selections show up on a summary page when the customer presses checkout. From there, the customer can enter their information which will be stored along with their selections in a separate order table.
So far I have the wizard control set up with each of the radiobuttonlists getting pulled from the database. how I can have these selections show up on a summary page then get stored with the customer information in another database.
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Jan 15, 2010
I am trying (unsuccessfully) to pre-select a radiobutton control (within a DetailsView control) based on a value found in a database.
There are only two values: "Yes" and "No". A field in the database has one of the values in it and I want the correct item selected when the record is displayed in Edit mode.
All my other record fields are displayed correctly--this is the only one giving me issues. I am using vb.
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Aug 18, 2010
I have some radio button pairs of same groupName. If I set one radio button to checked = True , as a result, the view is not displayed. I'm writing the code in aspx.cs but view is not updated. For other controls its get updated.
chatSettingsNode = xDoc.SelectSingleNode("//ToolBarChatSettings/ChatSettings/AdminSettings/Emoticons");
valueChk = chatSettingsNode.InnerXml;
value = Convert.ToBoolean(valueChk);
if (value == true)
{
rbtnAdminEmoticonsYes.Checked = true;
[Code]....
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Aug 2, 2010
I have a complicated user control on a form that's laid out they way the business unit wants it. What they would like is to be able to export this content to excel and/or PDF as an image. Basically I need to be able to render the user control as a static image.
Is there any simple way to do this or is it even possible? Since the user control is HTML, it's not really rendered at all at the server level as it's just HTML, so I would assume that I might need to interface with IE library.
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Nov 9, 2010
I want to render a user control in pagemethod and return the html back to client. But its getting annoying, I tried like many ways but nothing found working. The problem is that, the usercontrol require both HtmlHead and ScriptManager.
I tried this but it doesn't work(raise error : ScriptManger require in page) because ScriptManager must be inside HtmlForm but Page.Form always null.
[Code]....
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Feb 6, 2011
I am using web user control and making it visible false initially (page load) and on the selection of checkbox i am making it visible true. user control html is missing when i load it on checkbox selection. is there any when that i rebind the complete form again on checkbox selection so that user control html should be rendered.
i am really struggling to solve this issue since last two days.
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Aug 17, 2010
I have a scenario where, the content is:
[code]....
The entire div code is rendered and is sent at a mail using the code:
[Code]....
This works fine except that the User Control does not get rendered.
so that the User Control content is also rendered ?
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Jan 19, 2010
how to apply group name to html (input) radio button controls so that i can select any one of the available radio buttons?
I have input radios in a table. Each row contains two radios as follows. I want to select one from each row. But i am able to select only one radio button amongst all radio buttons present on all rows.
<input name="radiobutton" type="radio" value="radiobutton" />Option1
<input name="radiobutton" type="radio" value="radiobutton" />Option2
What change i have to make to select one radio button on each row?
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Nov 3, 2010
Render User Control with Events in html
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May 12, 2010
i'm just new in ASP.Net.
I want to render a Web User Control (has many server controls inside of it) as a HTML string, is there anyway to do it?
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Mar 25, 2010
I have come across a requirement to dynamically show or hide asp.net web controls , html server controls. I want to do this through a configuration XML (as it would be easier to config). So each page /aspx will have a configuration xml.
Would it be possible to create a control (may be a custom control , to which i can attach the xml file). The control (lets says - call it sequencer) should decide which control should be ordered in which order and if the control has to be shown or not. Ideally this sequencer control should use the page events and take decision on rendering the child controls.
Some thing like this
aspx -
<Sequencer XmlPath=".." Id="S1" Runat="server">
<Textbox id="t1" runat="server" />
<Textbox id="t2" runat="server" />
<Textbox id="t3" runat="server" />
</Sequencer>
This is hiw xml config may look like -
<Sequencer Id="S1">
<control id="t1" sequence="2" show="true" />
<control id="t2" sequence="1" show="true" />
<control id="t3" sequence="3" show="false" />
</Sequencer>
So in this case t2 should be rendered first then t1. The control id in the xml and the aspx has to be same.
t3 should not be rendered at all on the screen.
Which page load event should I use.
how I can create this kind of a custom control that does the above for me.
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Feb 5, 2011
Iam Creating a Hyperlink control in code behind user this way
string literalControl = "<asp:HyperLink ID="HyperLink1" onclick="fnClearField('asdf')" ForeColor="Red" Font-Underline=true CssClass="Row_Over_Ar_Ex" runat="server" >Clear</asp:HyperLink>";
cell.add( new literalcontrol(literalControl ))
but the control not showing all the style attributs, is this way the style attributes will not show?
do i have to create the server control using new hyperlink and then add all the attributes?
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