Unable To Find Checkbox Control In Gridview
Apr 21, 2010I'm unable find check box control in my webpage.
When building the page I'm getting "checkbox null" and "false".
I'm pasting the code here.
[Code]....
I'm unable find check box control in my webpage.
When building the page I'm getting "checkbox null" and "false".
I'm pasting the code here.
[Code]....
i have a gridview control i added checkbox contrl dynamically but i am not getiing the reference of checkbox in button clilck event here is my code Gridvew
[Code]....
.vb code
[Code]....
I have a gridview with checkboxes
<asp:GridView ID="gv" runat="server" DataKeyNames="Id" AllowSorting="True"
AutoGenerateColumns="false">
<Columns>
<asp:TemplateField >
<ItemTemplate>
<asp:CheckBox ID="chk" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="System_Date" HeaderText="System Date" />
</Columns>
</asp:GridView>
in button click event how to find checkbox control and delete selected row from gridview i binded gridview with datatable
I have tried so many ways to code
1 :- string DepttManager = ((DropDownList)GridViewDepartment.Rows[e.RowIndex].FindControl("ddlDepartmentManager")).SelectedValue;
and
GridViewRow gRow = (GridViewRow)sender;
GridView grid = (GridView)gRow.NamingContainer;
grid.SelectedIndex = gRow.RowIndex;
gRow.FindControl("ddlDepartmentManager");
grid.SelectedIndex = -1;
I am unable to find any control in row editing event of gridview that i have put in edit template. I have to populate the dropdown control so that in editing the user can select value from the control.
How ever i can access the controls in row updating .But i need it in row editing event.
Here is the code.
[Code]....
i have datalist and on button click event i check the checkbox is checked or notfor this my code is
<asp:DataList runat="server" ID="dlstproductsize">
<ItemTemplate>
<input type="checkbox" value="<%#eval("size_id")%>" id="chksize" runat="server" /> <%#Eval("name")%>
</ItemTemplate>
</asp:DataList>
If chkallowsize.Checked = True Then
For Each item In dlstproductsize.Items
If (CType(item.FindControl("chksize"), HtmlInputCheckBox)).Checked = True Then
ocommon.ProductMapingInsert(uniq_id.Text, CType(item.FindControl("chksize"), HtmlInputCheckBox).Value)
End If
Next
End If
i get the error like object reference not set to the object
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The select and update statements in my stored procedures are as follows:
[Code]....
Update tblNewArticle set Review_Status=@Review
[Code]....
I have downloaded the ajax toolkit control i been using it for a couple of months now. But I cannot see Ajax toolkit pie chart control..
Why will I get it ? Do I have to download seperately?
I am able to find the controls of all of these Lables and TextBoxes accept the edateTB. This is strange to me because it is in the same view as the sdateTB. So why would edateTB return NULL when I try to use FindControl on it and sdateTB return the correct control?
Here is the codebehind where I am getting this error. There is more code in this, but I just thought I would include everything up to the part where I get the NULL error.
[Code]....
Couple of days ago I was creating site where i have placed a login control taken from the Login Tab in Toolbar, but today i am unable to find it there, see the attached snap, where the Login Control Is ?
View 5 RepliesI am not able to Disable CheckBox in GridView , whats the problem with my code ?
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox ch = (CheckBox)row.FindControl("CheckBox1");
if (ch.Checked)
{
String ExamineeId = (String)GridView1.DataKeys[row.RowIndex].Value;..........
I'm trying to define the parameters of my data source using a stored procedure. My Stored Procedure Syntax is perfect and i'm happy with that, i've just got trouble with connecting my parameters to my controls. I have 19 Parameters, of which i've managed to connect 17 to controls within my ASP.Net form (some to text boxes, some to ddls etc...)
However, i'm trying to connect a particular parameter to a control, but when i drop down my list of controls it's not visible? The control is within a hidden panel so i've un-hidden it and it's still not there. I've even commented out the panel and tried that but i can't find this control! I just cant seem to get this control to appear in the list.
Has any one seen anything like this before at all?
i would like to uncheck a checkbox in my gridview when the user clicks on that row... how do i do that in vb.
also, when trying out my website, when i do uncheck the checkboxs and click on the link to go back to the home page, the gridview on that page which links to the same table does not update the checkboxes with the new values.
This has got me stumped. I am trying to find a checkbox in a dynamically loaded asp.net Repeater template. The template works fine and the databinding is fine and everything displays fine but I can't find the control!
This is the repeater code (I have a similar one for the alternate template with a different style):
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I do try to use the modalpopup extender, it works with the client button click but not with the server side method.
I even used the document.readyState == "complete" javascript method to be shure the whole page is loaded.
But I'm still unable to get that modalpopup extender control.
Im not able to find control in datalist.
Protected
Sub DataList1_ItemDataBound(ByVal sender
As Object,
ByVal e As System.Web.UI.WebControls.DataListItemEventArgs)
Handles DataList1.ItemDataBound
lblshippingoutside.Visible =
Dim lblshippingoutside
As Label = CType(e.Item.FindControl("lblshippingoutside"), Label)False
End Sub
Throws an exception .
Object reference not set to an instance of an object.
I can't seem to check the checked value of a dynamic checkbox within a gridview. I've tried dozens of ways to test the checkbox's checked value, but it still returns false, when it should return true. If I change the checked value to true in the ASPX web page, then it will return true, even when it should return false. Any ideas? I've tried many different ways of checking the checkbox value including the one below.
MailingLabels.aspx
Code:
<asp:GridView ID="GridView" runat="server" AutoGenerateColumns="False" DataKeyNames="NewClientID">
<Columns>
<asp:BoundField DataField="NewClientID" InsertVisible="false" />
[code]....
Unable to find control inside the usercontrol in vb.net
code of master page
[Code]....
code of master page 2
[Code]....
In the web user control i have insert some link buttons like home, contact etc...
in the default page i want to change the linkbutton css class inside the user control....
i am always get nothing value....
I am using following code in sharepoint custom page. Whenever I try to run the page it is giving me following error
Unable to find control id 'txtStart$txtStartDate' referenced by the 'ControlToCompare' property of 'valDate'.
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i got checkbox in gridview which put inside the itemtemplate. the problem is when i tick on the checkbox, the value for checked property still is a false value. Wat;s wrong?
aspx :
<asp:GridView
ID="GridViewRDR1_Hidden"
runat="server"
AutoGenerateColumns="false">
<Columns
>
<asp:TemplateField
>
<ItemTemplate><asp:CheckBox
ID="chkStatus"
runat="server"/></ItemTemplate></asp:TemplateField
>
</Columns
>
</asp:GridView
>
aspx.vb
If
GridViewRDR1_Hidden.Rows.Count > 0
Then
For
Each
row As
GridViewRow
In
GridViewRDR1_Hidden.Rows
Dim
cb As
CheckBox
= CType(row.FindControl("chkstatus"),
CheckBox
)
If
cb.Checked
Then
MsgBox("True")
End
If
Next
End
If
SOURCE CODE -
Code:
<asp:GridView runat="server" ID="Grd" AutoGenerateColumns ="false" >
<Columns >[code]....
You can see in Pic Attached, Records of table TBL_STUDENT, and also find the output what I am getting . For the records - 2 and 3 whose Name is B and C, I m getting the correct status,But for the Record whose Name is A, I am not getting correct Output, Because in Database null is dere, I want if in database null is dere then checkbox is Unchecked. How to to dat???
I am trying to add dynamically gridview (headerstylewidth, back-color, height, etc…, itemstyle width, back-color, height, etc…), in codebehind but I am receiving this error:
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
See the code:
<asp:GridView
runat ="server"
ID="gridview1"
Height="175px"
Width="750px"
GridLines="Both"
onRowDatabound="gvdata_onRowdataBound">
[CODE]..
I am developing a asp database that is linked with SQL Database. When I am tryind to Find Control (GridView2) inside of another control (Panel2) that sits in Item Template for DetailsView, I got an error message:
Object reference not set to an instance of an object.
<asp:DetailsView ID="DetailsView1" HeaderText="Details" HeaderStyle-CssClass="labelheadRight" runat="server" AutoGenerateRows="False" DataKeyNames="pk_BackupDriveSerial"
DataSourceID="SqlDataSource1" GridLines="None"
CssClass="Detailsview" AllowPaging="True"
OnDataBinding="DetailsView1_OnDataBind"
OnItemInserted="DetailsView1_OnInsert"
OnItemDeleted="DetailsView1_OnDelete"
>
<Fields>
<asp:BoundField DataField="pk_BackupDriveSerial" ControlStyle-CssClass="dropdownsize"
HeaderText="Serial No" ReadOnly="True"
SortExpression="pk_BackupDriveSerial" >
<ControlStyle CssClass="dropdownsize"></ControlStyle>
</asp:BoundField>
<asp:BoundField DataField="BackupDriveMake" HeaderText="Make" ControlStyle-CssClass="dropdownsize"
SortExpression="BackupDriveMake" >
<ControlStyle CssClass="dropdownsize"></ControlStyle>
</asp:BoundField>
<asp:BoundField DataField="BackupDriveModel" HeaderText="Model" ControlStyle-CssClass="dropdownsize"
SortExpression="BackupDriveModel" >
<ControlStyle CssClass="dropdownsize"></ControlStyle>
</asp:BoundField>
<asp:TemplateField HeaderText="Type" SortExpression="fkid_BackupDriveTypes" ControlStyle-CssClass="dropdownsize"
Visible="False">
<EditItemTemplate>
<asp:Label ID="Label6" runat="server" Text='<%# Bind("BackupDriveMake") %>' Width="145px"></asp:Label>
<br />
<asp:TextBox CssClass="dropdownsize" AutoPostBack="true" ID="DropDownList5" runat="server" Text='<%# Bind("BackupDriveModel") %>' ></asp:TextBox>
<br />
<asp:Panel ID="Panel2" runat="server" CssClass="dropdownpanel" >
<asp:GridView CssClass="dropdowngrid" ID="GridView2" runat="server" AutoGenerateColumns="False"
CellPadding="4" DataKeyNames="pkid_BackupDriveTypes" SelectedValue='<%# Bind("fkid_BackupDriveTypes") %>'
DataSourceID="SqlDataSource3" ForeColor="#333333" GridLines="None" OnSelectedIndexChanged="GridView2_OnChange">
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:BoundField DataField="pkid_BackupDriveTypes"
HeaderText="pkid_BackupDriveTypes" InsertVisible="False" ReadOnly="True"
SortExpression="pkid_BackupDriveTypes" Visible="False" />
<asp:BoundField DataField="BackupDriveMake" HeaderText="Make"
SortExpression="Make" />
<asp:BoundField DataField="BackupDriveModel" HeaderText="Model"
SortExpression="Model" />
<asp:CommandField ShowSelectButton="True" />
</Columns>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#2461BF" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
</asp:Panel>
<asp:DropDownExtender ID="DropDownExtender2" runat="server" DropDownControlID="Panel2" TargetControlID="DropDownList5">
</asp:DropDownExtender>
</EditItemTemplate>
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I also tried
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when i checked the checkbox in parent gridview, all checkbox in child gridview will be checked.
how can i select the checkbox of child gridview checkbox in the when i select the checkbox from the parent gridview?
code behind
protected void OnCheckedChanged(object sender, EventArgs e)
{
[Code].....
I have a checkbox template field in a grid view control. I want to execute some code when a checkbox is checked or unchecked - how do I do this? Which event is fired?
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