How do I determine if the checkbox is checked or not checked?
Very perplexed why this is not working - it is so simple!
On my web form:
<asp:CheckBox ID="DraftCheckBox" runat="server" Text="Save as Draft?" />
<asp:Button ID="PublishButton" runat="server" Text="Save" CssClass="publish" />
Code behind which runs in the click event for my save button:
void PublishButton_Click(object sender, EventArgs e)
{
if (DraftCheckBox.Checked)
{
newsItem.IsDraft = 1;
}
}
When debugging it never steps into the If statement when I have the checkbox checked in the browser. Ideas?!
I think there maybe some other code affecting this as follows...
In Page_load I have the following:
PublishButton.Click += new EventHandler(PublishButton_Click);
if (newsItem.IsDraft == 1)
{
DraftCheckBox.Checked = true;
}
else
{
DraftCheckBox.Checked = false;
}
newsItem is my data object and I need to set the checkbox checked status accordingly.
When the save button is hit I need to update the IsDraft property based on the checked status of the checkbox:
void PublishButton_Click(object sender, EventArgs e)
{
if (IsValid)
{
newsItem.Title = TitleTextBox.Text.Trim();
newsItem.Content = ContentTextBox.Text.Trim();
if (DraftCheckBox.Checked)
{
newsItem.IsDraft = 1;
}
else
{
newsItem.IsDraft = 0;
}
dataContext.SubmitChanges();
}
}
So, isDraft = 1 should equal checkbox checked, otherwise checkbox should be un-checked. Currently, it is not showing this.
Specify event for Button Click
<asp:Button ID="PublishButton" runat="server" Text="Save" onclick="PublishButton_Click" />
What i can see you have not got a OnClick on your button. So like this:
<asp:CheckBox ID="DraftCheckBox" runat="server" Text="Save as Draft?" />
<asp:Button ID="PublishButton" runat="server" OnClick="PublishButton_Click"
Text="Save" CssClass="publish" />
And then the function should work like it is:
protected void PublishButton_Click(object sender, EventArgs e)
{
if (DraftCheckBox.Checked)
{
newsItem.IsDraft = 1;
}
}
Please replace code as following code..
void PublishButton_Click(object sender, EventArgs e)
{
if (DraftCheckBox.Checked==True)
{
newsItem.IsDraft = 1;
}
}
Try adding onclick="PublishButton_Click" in the button field on the form. And I don't know if it makes a difference, but generated event handlers are protected void.
For me the best solution in the end has been to create 2 separate pages: 1 for editing a news articles & 1 for a new news article. So Ill never then be in the position of a new news data object being created when the page reloads.
Both page return to the article index list page when the save button is pressed and that seems to work with being able to save the state of the draft checkbox and then show the state on the edit page.
The checkbox.checked isn't used in the context you want it to (this is a boolean that if true, will make the checkbox look checked).
What you could do is to use instead a checkboxlist. Then you could do the following:
foreach(Listitem li in CheckBoxList1.Items)
{
if (li.Selected)
{
NewsItem.Isdraft = 1;
}
}
Related
On my aspx page there is a RadioButtonList and it contains list items named “additions” and “termination”. Also there two gridview “GV_addition” and “GV_termination”. On selecting the radio button “addition”, then the gridview “GV_addition” will be shown. When item “termination” is selected, then the gridview “GV_termination” will be shown.
On radio button changed event, it is working correctly. But my problem is , when I click browser back button, the radio button selection and corresponding grid view not showing correctly. I got issue, “Gv_termination” is showing when radio button “addition” is selected. This issue is showing only when I click browser back button.
Please find my below code
<asp:RadioButtonList ID="RadioButtonList1" runat="server"
onselectedindexchanged="RadioButtonList1_SelectedIndexChanged" AutoPostBack="true">
<asp:ListItem Text="addition" Value="addition"> </asp:ListItem>
<asp:ListItem Text="termination" Value="termination"></asp:ListItem>
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (RadioButtonList1.SelectedIndex == 0)
{
GV_addition.Visible = true;
GV_termination.Visible = false;
}
else
{
GV_termination.Visible = true;
GV_addition.Visible = false;
}
}
I could not understand why the why the radio button selection and corresponding gridview visiblity is not working on the browsers back button event. Can any one help me to solve this issue?
Please try below steps. For me the same scenario worked.
I could see the values are updating correctly, but the updated radio checked states are not updating in to the UI. So I have set it using javacript on the Onload event of a body.
Add the Onload event on the body.
<body onload="setRadioButonStatus()">
and add the following Javascript.
function setRadioButonStatus() {
var rbtn1 = document.getElementById('RadioButton1');
var rbtn2 = document.getElementById('RadioButton2');
if (rbtn1.hasAttribute("checked"))
rbtn1.checked = true;
if (rbtn2.hasAttribute("checked"))
rbtn2.checked = true;
}
Seems like you aren't creating a "default" scenario. You can do this, and tie the logic together more closely by doing something like this on every Page_Load and leaving it out of your event.
protected void Page_Load(object sender, EventArgs e)
{
GV_addition.Visible = RadioButtonList1.SelectedIndex == 0;
GV_termination.Visible = RadioButtonList1.SelectedIndex == 1;
}
protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
{
}
I need to unselect radio button in radio button list, i know it is more sensible to use checkbox but the management wants radio button to be unchecked.
RadioButtonList control is a collection of ListItems. To clear one radio button in the control you need to use Index for that particular item. To clear all radio buttons in the control, there is a method "ClearSelection()".
//To Unselect First Item
RadioButtonList1.Items[0].Selected = false;
//To unselect all Items
RadioButtonList1.ClearSelection();
hope this will resolve your issue.
private void Clear()
{
if(RadioButton1.Checked)
{
RadioButton1.Checked = false;
}
}
Use this:
RadioButton1.Checked = false;
myRadioButtonList.SelectedIndex = -1;
Hope this help.
You mean you want it to be possible for your radio button group to have zero values selected? Technically, you can just ensure that no radio in the group has its checked value set. checked="" or just delete the entire attribute.
Be aware that this is an invalid state for the radio group. It's like a boolean that is set to neither true nor false. It makes no sense semantically and is in violation of the HTML spec.
If you are constrained to a radio group, the only valid option is to include one radio that represents a 'none of the other options' state.
I had the same problem. In my case, I was using the radio button checkedChanged event to automatically append a medical documentation string snippet into a rich text box control. The snippet would be different for each radio button selected, and the requirement was that only one choice could be allowed. So radio buttons were the best choice instead of check boxes. The problem was that if the user wanted to remove ALL of the text snippets from the textbox, the s/he could just manually select the text from the box and delete it -- but at least one radio button would remain selected.
So, I found that the easiest way to fix this would be to add a button to the form and use its _Click event to set the specified radio button checked status to false.
So, My code looked like this...
// for rad 1
private void rad_NoDifferent_CheckedChanged(object sender, EventArgs e) {
if(rad_NoDifferent.Checked) {
rtb_GSC_Notes.AppendText(sRating_NoDiffMsg);
} else {
rtb_GSC_Notes.Text = rtb_GSC_Notes.Text.Replace(sRating_NoDiffMsg, sNoMsg.TrimEnd());
}
}
// for rad 2
private void rad_VeryDifferent_CheckedChanged(object sender, EventArgs e) {
if(rad_VeryDifferent.Checked) {
rtb_GSC_Notes.AppendText(sRating_VeryDiffMsg);
} else {
rtb_GSC_Notes.Text = rtb_GSC_Notes.Text.Replace(sRating_VeryDiffMsg, sNoMsg.TrimEnd());
}
}
// for rad 3
private void rad_Unsure_CheckedChanged(object sender, EventArgs e) {
if(rad_Unsure.Checked) {
rtb_GSC_Notes.AppendText(sRating_UnsureMsg);
} else {
rtb_GSC_Notes.Text = rtb_GSC_Notes.Text.Replace(sRating_UnsureMsg, sNoMsg.TrimEnd());
}
}
// for button reset
private void btn_ClearRadioButtons_Click(object sender, EventArgs e) {
rad_NoDifferent.Checked = false;
rad_Unsure.Checked = false;
rad_VeryDifferent.Checked = false;
}
Recently I was facing same issue however I found the solution with Radio button.
below are the aspx code for radio button
<div>
<asp:RadioButton ID="RadioButton1" GroupName="myg" onClick="clicked(this.id);" runat="server" />
<asp:RadioButton ID="RadioButton2" GroupName="myg" onClick="clicked(this.id);" runat="server" />
<asp:RadioButton ID="RadioButton3" GroupName="myg" onClick="clicked(this.id);" runat="server" />
<asp:RadioButton ID="RadioButton4" GroupName="myg" onClick="clicked(this.id);" runat="server" />
</div>
Just write below java script.
<script type="type/javascript">
var arr = [];
function clicked(radid) {
var ra = document.getElementById(radid);
if (arr.indexOf(radid) < 0) {
arr.splice(0, arr.length);
arr.push(radid);
}
else {
arr.splice(0, arr.length);
ra.checked = false;
}
}
</script>
Hope this will solve your purpose.
WPF/C#
if (RadioBTN.IsChecked == true) {
RadioBTN.IsChecked = false;
}
I am creating a custom view in a SharePoint visual Web Part using ASP.NET (Visual C#) and have a CheckBoxList, and a button.
MarkUp for the List & Button:
<td>
<asp:checkboxlist ID="cblYearLst" runat="server" EnableViewState="true" />
</td>
<td>
<asp:Button ID="btnRefineSearch" Text="Refine Search" runat="server" />
</td>
I add items to the CheckBoxList on PreRender:
if (!IsPostBack)
{
if (LstYears != null)
{
for (int i = 0; i < LstYears.Count(); i++)
{
cblYearLst.Items.Add(new ListItem(LstYears[i], LstYears[i]));
}
}
}
And I call the event Handler for the button on Page_Load:
btnRefineSearch.Click += new EventHandler(this.btnRefineSearch_Click);
All of the CheckBox list-items do not stay selected after the button is clicked. I can retrieve the selected values, but they won't display as selected. When I add the Click event handler for the button in the pre-render event, the data is displayed appropriately but the selected values can no longer be retrieved by my Click event.
Any ideas on what might be causing this behaviour??
Did you try moving the binding of the checkboxlist into the page_load instead of pre_render? Just an idea because it seems like the page is losing selections on postback and you are regenerating the options each time.
UPDATE: I created a quick page and this works correctly. Do you have your viewstate turned off for the entire page in your page directive, or possibly in the web.config? I see you have it enabled on the checkboxlist but maybe there is a global setting throwing you off.
protected void Page_Load(object sender, EventArgs e)
{
btnRefineSearch.Click += new EventHandler(this.btnRefineSearch_Click);
List<string> LstYears = new List<string>();
LstYears.Add("one");
LstYears.Add("two");
LstYears.Add("three");
LstYears.Add("four");
if (!IsPostBack)
{
if (LstYears != null)
{
for (int i = 0; i < LstYears.Count; i++)
{
cblYearLst.Items.Add(new ListItem(LstYears[i], LstYears[i]));
}
}
}
}
private void btnRefineSearch_Click(object sender, EventArgs args)
{
Response.Write(cblYearLst.SelectedValue);
}
I figured out the issue, since I have AutoEventWireUp set to true as Keenan has suggested it should all work if I do it in the page_load.
The problem was that Page_Load was being called twice, and I discovered that this was because I was redirecting the user to the same URL with QueryString parameters. After I made the much needed changes, my code works very well.
+1 Keenan for your help and thank you (#jfmags) for tipping me off by telling me you think it is something else.
:D
<asp:TemplateField HeaderText="Select One">
<ItemTemplate>
<asp:RadioButton ID="RadioButton1" runat="server" />
</ItemTemplate>
</asp:TemplateField>
aspx.cs
protected void Button1_Click(object sender, EventArgs e)
{
foreach (GridViewRow di in GridView1.Rows)
{
RadioButton rad = (RadioButton)di.FindControl("RadioButton1");
if (rad.Checked&&rad!=null)
{
s = di.Cells[1].Text;
}
}
Response.Redirect("applicants.aspx?form=" +s);
}
I'm selecting the rows that are selected with this but I have a problem here I want user to be able to select only one radiobutton but its allowing all the radiobuttons to be selected at once.Can you help me in removing this problem please.
please.
Maybe I'm too late here on the party but this will do the trick,
check out here......
This might be useful for someone watching this answer in the future.
In the ASP page you need to set the GroupName property to be the same for all the radio buttons, e.g.:
<asp:RadioButton ID="RadioButton1" runat="server" GroupName="RadioGroup" />
well for that you can use follwing code
first of all you should define the groupName.The follwing code will work
<asp:RadioButton ID="RadioButton1" OnCheckedChanged="rbSelector_CheckedChanged" AutoPostBack="true" GroupName="Apply" runat="server"></asp:RadioButton>
C#
protected void rbSelector_CheckedChanged(object sender, System.EventArgs e)
{
foreach (GridViewRow oldrow in GridView2.Rows)
{
((RadioButton)oldrow.FindControl("RadioButton1")).Checked = false;
}
//Set the new selected row
RadioButton rb = (RadioButton)sender;
GridViewRow row = (GridViewRow)rb.NamingContainer;
((RadioButton)row.FindControl("RadioButton1")).Checked = true;
}
You can try this link to select single radiobutton in grid : http://www.c-sharpcorner.com/uploadfile/krishnasarala/select-single-radio-button-in-gridview-in-Asp-Net/
Using the GroupName property by itself won't work, each radio button will still get a unique name attribute since they're in different rows of the grid.
One option is to emit the radio button markup manually using a Literal control (example). This will make it easy to group the radio buttons on the client-side, but requires a bit more work to determine which button was selected on postback.
When I needed this behavior, I found it easier to keep the radio buttons as server-side controls, and just enforce the button group w/ jQuery. Put your RadioButton in a TemplateField as you've shown, then add this code to uncheck all the other buttons when one is checked:
$(document).ready(function () {
// could also pass in a unique ID selector
createManualRadioButtonGroupForGridView(".myGridViewClass");
});
function createManualRadioButtonGroupForGridView(gridViewSelector) {
$(gridViewSelector + " input[type=radio]").change(function () {
var checkedRadioButton = this;
$(gridViewSelector + " input[type=radio]").each(function (e) {
if (this !== checkedRadioButton) {
$(this).prop("checked", false);
}
});
});
}
I have a gridview add a link button "Edit":
<asp:LinkButton ID="btnViewDetails" runat="server" text="Edit" CommandName="Select"></asp:LinkButton>
and
protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
using (var dataContext = new NewsStandAloneDataContext(Config.StandaloneNewsConnectionString))
{
DetailsView1.ChangeMode(DetailsViewMode.Edit);
DetailsView1.Visible = true;
var dataList =
dataContext.sp_Name(Convert.ToInt32(GridView1.SelectedValue), Value1);
ScriptManager.RegisterStartupScript(this, GetType(), "show1", "openEditWindow();", true);
DetailsView1.DataSource = dataList;
DetailsView1.DataBind();
}
}
But my details view does not show anything.
Looking at your code you have two different methods in play. In your ViewDetails button you are referencing a command name and argument. In your other block of code you are responding to the changing of the selected row. Two different concepts.
You would want to show the details view from the "ItemCommand" event, and not the selectedindexchanged event.