Operator '&' is not defined for types 'String' and 'System.Web.UI.WebControls.TextBox'
Can anyone tell me what this error message means, and what to do to correct it. Here is the code that has the error:
Dim sql As Stringsql = "INSERT INTO tblConnecting (Date, Member, Name, Company, Phone, Fax, Address, NamesofAttendees, PaymentType, Email) " _
& "Values('" & Today() & "', '" & blnMember & "', '" & Me.txtName.Text & "', '" & Me.txtCompany.Text & "', '" _& Me.txtPhone.Text & "', '" & Me.txtFax.Text &...
BC30452: Operator '&' is not defined for types 'String' and 'System.Web.UI.WebControls.AccessDataSource'.
hi everyone, i keep getting the error page... Compilation Error
Description: An
error occurred during the compilation of a resource required to service
this request. Please review the following specific error details and
modify your source code appropriately.
Compiler Error Message: BC30452: Operator '&' is not defined for types 'String' and 'System.Web.UI.WebControls.AccessDataSource'.
Source Error:
Line 20: Line 2...
Unable to cast object of type 'System.Web.UI.WebControls.Label' to type 'System.Web.UI.WebControls.TextBox'
I am attempting to "Update" a field in a Datagrid, but no matter what I do (Using either Label or Text Boxes) I keep getting the same error:
Unable to cast object of type 'System.Web.UI.WebControls.Label' to type 'System.Web.UI.WebControls.TextBox'
The Error is highlighted below in the Sub... <==THE FIELD THAT CALLS THE ERROR
Any help would be greatly appreciated !!!
Thanks !!
The code is as follows...
<table border=0 height=210 bordercolor=olive ><tr valign=top><td>
<asp:datagrid id="FacilityDataGrid"...
Error Serializing Value 'System.Web.UI.WebCOntrols.TreeNode' of type 'System.Web.UI.WebCOntrols.TreeNode'
Hi,
I am getting the error stated in the subject when i am storing a TreeNode in a ViewState and then using it as follows
if (ViewState["ProductCounty"]!=null)
{
TreeNode _productCountyNode = DataTree.FindNode(((TreeNode)ViewState["ProductCounty"]).ValuePath);
_productCountyNode.Expand();
}
what could be causing this error?
Hi,
I believe TreeNode isn't serializable in a way its required for objects which can be put to ViewState - as reference - (TreeNode implements IStateManager and is meant to work together with TreeView itself saving it...
Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.TextBox'
Hello,
Goal: enter a number in two fields HoursPerUnit and PeoplePerUnit and the value for the third field, TotalHoursPerUnit will populate after the the number in the two fields have been caculated. Using the code below I receive the error message above. Please tell me what am I doing wrong? Do I need to cast the text as a literal? Please help?
Thank you in advance,
<%@ Page Language="VB" MasterPageFile="Default.master" AutoEventWireup="false" CodeFile="frmHR.aspx.vb" Inherits="frmHR"...
Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.TextBox'.
Hi, any idea why I'm getting the following error?Line 45: protected void CartGrid_RowUpdating(object sender, System.Web.UI.WebControls.GridViewUpdateEventArgs e)
Line 46: {
Line 47: TextBox QuantityTextBox = (TextBox)CartGrid.Rows[e.RowIndex].Cells[2].Controls[0];
Line 48: int Quantity = Convert.ToInt32(QuantityTextBox.Text);
Line 49:
Are you sure that the control at CartGrid.Rows[e.RowIndex].Cells[2].Controls[0] isn't a LiteralControl? How are you creating code this in your code?Brent JenkinsASP.NET, C#, Web Developerwww.valewebdesign.co.uk
...
Error: Cannot convert type 'System.Web.UI.Control' to 'System.Web.UI.WebControls.ButtonField'
Hello,
I am getting the following error during compiliation. Any suggestions to fix it. Thanks.
Cannot convert type 'System.Web.UI.Control' to 'System.Web.UI.WebControls.ButtonField'
protected void gvEvents_RowCommand(Object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Select")
{
int index = Convert.ToInt32(e.CommandArgument);
GridViewRow selectedRow = gvEvents.Rows[index];
string sID;
ButtonField btn;
if (selectedRow.RowType == DataControlRowType.DataRow)
{
sID = ((ButtonField)selectedRow.FindControl("ID")).DataTextFi...
''''''''''''''''''''Name: haznen
Email: haznenatyahoodotcom
Product: Gran Paradiso Alpha 8
Summary: ''''''''''''''''''''
Comments:
''''''''''''''''''''''''''''''''''''
Browser Details: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061204 UGES/1.7.2.0 GranParadiso/3.0a1
From URL: http://www.mozilla.org/projects/granparadiso/
Note to readers: Hendrix gives...
Unable to cast object of type 'System.Web.UI.WebControls.FormView' to type 'System.Web.UI.WebControls.DropDownList'.
Hi,
I have a formview with a dropdownlist created dynamically. i want to determine whether the dropdownlist was clicked. the code is written in the FormView1_DataBound method.
I get the following error in the line below that is in italics and underlined:
Unable to cast object of type 'System.Web.UI.WebControls.FormView' to type 'System.Web.UI.WebControls.DropDownList'.
Here is my code:
ddl_iFullname = New DropDownList
ddl_iFullname.ID = "ddl_iFullname"
ddl_iFullname.DataSource = ObjectDataSource3
ddl_iFullname.DataTextField = "fullname"
ddl_iFullname.DataValueField = "...
Error showing up: Unable to cast object of type 'System.Web.UI.WebControls.TextBox' to type 'System.IConvertible'.
Hi,
I am trying to pass date values from two textboxes in a stored procedure from ASP.net page. However, it seems it is not passing the date properly.
I am getting the following error at the following line:
cmd_r.Parameters("@initial_est_date").Value = Convert.ToDateTime(Textbox1)
and the error is as stated in the title.
I would appreciate any help to resolve this. Thanks
CODE:<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %><%@ Import Namespace="System.Data.Common" %>
<%@ I...
Cast from type ''''DBNull'''' to type ''''String'''' is not valid.
How do I avoid getting this error:
Cast from type ''''DBNull'''' to type ''''String'''' is not valid.
I am trying to get values from the database into a form for updating using a Datareader, SQL is set to allow nulls for certain fields as they are not required but the only way I can get the form to display is by adding a space in SQL.
Is there another way around this?
Check if it is equal to DBNull.Value first and if it is, don't do the cast.Stanley Tan
theSpoke Blog
Where in the code does it need to go?
I am using the following and it's the profile that isn't always requi...
Value of type 'String' cannot be converted to 'System.Web.UI.WebControls.TextBox'
I have a new page (wireframe) based on the User_Create page in the Time Tracker starter kit. I have no code in the code behind page. What might be causing this error? This newbie needs help.
I had a TextBox control named "Title" which appearantly conflicted with the page title.
thanks!!! ...
Error 1 The type 'System.Web.UI.WebControls.LinqDataSource' exists in both 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll' and 'c:\WINDOWS\asse
Once I build project. I encounter this error. Does someone experience this error?Error 1 The type 'System.Web.UI.WebControls.LinqDataSource' exists in both 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll' and 'c:\WINDOWS\assembly\GAC_MSIL\System.Web.Extensions\3.6.0.0__31bf3856ad364e35\System.Web.Extensions.dll' D:\Source Code\Linq_Lesson5\Default.aspx 1 1 D:\Source Code\Linq_Lesson5\
It appears tha...
'''''Name: mario
Email: ramar17atfastwebnetdotit
Product: Gran Paradiso Alpha 2
Summary: '''''
Comments:
K:
Browser Details: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a2) Gecko/20070206 GranParadiso/3.0a2
...