Forms Data Controls :: Key Was Not Present In Dictionary?
Jan 20, 2011
I'm trying to execute an aspx page but get this error.
Server Error in '/' Application.
The given key was not present in the dictionary. Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
[Code]....
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Similar Messages:
Jun 18, 2010
my requirement is : am having a excel sheet with some values listed i want to pass each value present in any(specified) column to a text box present on a remote page (a site other than mine) as a input and capture the result displayed on the page and then store the input and reuslt side by side in db this should repeat till the end of the input values in the excel sheet.
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Apr 22, 2010
I found a example of this but it wont work for me. So I will do a clean question by asking how do I bind a dictionary to a repeater?
I work with code behind so its for the OnItemDataBound. My Dictionary look like Dictionary<string, string>();
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Feb 1, 2011
I'm new to c# and .net but I think what I'm trying to do is fairly simple, however I think I'm getting stuck on variable types.So I have say 6 literal webcontrol myReq1, myReq2, myReq3.... and rather than implicitly setting them line by line I just want to run through a loop and set them dynamically. So to do this I've set up a dictionary that will contain the name of each literal, I can then run through those to add the data. This all works when I set up the dictionary by hand ie
Dictionary<int, Literal> myReqDict = new Dictionary<int, Literal>();
myReqDict.Add(0, myReq1);
myReqDict.Add(1, myReq2);[code]...
Obviously the Text inserted would be dynamic too, but you get the idea, so all that works just fine, but I'd like to do the Add part of the dictionary dynamically as well and that's where I'm running into trouble, I want to do something like:
Dictionary<int, Literal> myReqDict = new Dictionary<int, Literal>();
for(int cnt = 0; cnt<7 ;cnt+= 1){
myReqDict.Add(cnt, "myReq"+(cnt+1));
}
However this isn't valid, I can see why the "myReq"+(cnt+1) would not be valid as it's a String rather than a literal, but how can I convert the String to the Literal? What I am confused about is why the cnt on Add also isn't accepted, it is typed as an Int so to my mind it should be accepted
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Mar 4, 2011
I have a Dictionary and I bind it to my Grid view...
[Code]....
But its not paging at all... is it even possibe to page if you are bound to a Dictionary?
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Jul 10, 2010
how can I specify DataKeyNames for a GridView when using a dictionary as DataSource?
[Code]....
In this example I would like to use "cat", "dog", "llama" and "iguana" as DataKeys for the four rows.
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Feb 27, 2010
I have a gridview which is present inside a repeater. I have been successful in displaying the data inside the grid view. Now I want to fetch data from the gridview. But i have not been able to fetch the data from the grid view.
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Feb 17, 2011
I have ListView control on my page, and i bound it to Dictionary<string,DataTable> generic.Now i'm trying to put DataPager on my page to support paging, but DataPager doesn't work properly, in particular, I have to click twice to move to next page, or first few records repeating thru every page. What's the problem, what am I doing wrong? I used ListView control before with ObjectDataSource and it worked just fine. Now I'm using Entity Framework to retrieve data frm Db.
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Jun 15, 2010
with the code to present data in a gridview but without binding it to a database.
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Mar 8, 2010
I have an application where I display the data from sql table to details view. There are many columns in SQL table, among them I combine two colums firstname and lastname to Name using templateField.
My code:
[Code]....
So, the problem is: If Name colum is empty, No data at all, I want to hide that Name column in detailsView.
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Dec 5, 2010
here, i want to read the data for sql table, but there has error occur. "Invalid attempt to read when no data is present."
protected void DropDownListSelectDateYYYY_SelectedIndexChanged(object sender, EventArgs e)
{
Session["selectDate"] = Session["month"].ToString() + '/' + Session["day"].ToString() + '/' + DropDownListSelectDateYYYY.SelectedValue.ToString();
System.Diagnostics.Debug.Print(Session["selectDate"].ToString());
}
string sqlstr = "select * from ATTENDANCE where staff_Name = '" + LabelEmpSelected.Text.Trim() + "'and attendance_Date = '" + Session["selectDate"] + "' ";
whic session["selectDate"] cann't match to the database column data which is mm/dd/yyyy
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Mar 5, 2010
I want to create a Dictionary... where i can get Dictionary database or World lists (english to english , english to hindi)
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Jun 15, 2010
I am handling the row databound event. I need to bind a dropdownlist which is present only in the EditItemTemplate.
So it is throwing:
DropDownList ddlAccountingPeriod = e.Row.FindControl("ddlAccountingPeriod") as DropDownList;
UIControlHelper.BindApprovalPeriod(ddlAccountingPeriod);
this throws a null exception as the dropdown is not present in the ItemTemplate.
Is there a way to check whether it is itemtemplate or edititemtemplate.
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Nov 23, 2010
I have a 4 formviews present on a page. Three are updating to the DB without issue when the update link button is clicked. One is not. I have the DataKeyName set and still it doesn't save.
[Code]....
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Feb 24, 2010
I have a <%Bind("prict")%> and I want to put the word Pri: in front of it but, it even appears if this field is null. How do I do this?
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Apr 21, 2010
I'm tyring to bind a list of Dictionary objects to ListView, but for some reason it returns me an error, ItemTeplate
[Code]....
Code Behind
[Code]....
error says
[Code]....
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Mar 7, 2010
I have a repeater that is bound to a dictionary and displayed as follows:
[Code]....
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Jun 1, 2010
I am having trouble trying to access a UserControl I created and placed inside the EditTemplate of the ListView. How is it done? I've tried to access it at the ListView's ItemDataBound, ItemEditing and Databound with the following code with no luck:
ucEditTask = DirectCast(lvTimeEntry.FindControl("ucEditTask"), UserControl)
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Dec 23, 2010
I have a class that maintains a static dictionary of cached lookup results from my domain controller - users' given names and e-mails.My code looks something like:
private static Dictionary<string, string> emailCache = new Dictionary<string, string>();
protected string GetUserEmail(string accountName)
{
if (emailCache.ContainsKey(accountName))
{
return(emailCache[accountName]);
}
lock(/* something */)
{
if (emailCache.ContainsKey(accountName))
[code]...
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Mar 28, 2010
I have a grid view and I added edit and Save buttons to it. When I click on edit I am able to edit the data but when I click on save I amgetting the data before edit.
Please see my code below.
Eg: I have start date as 2005-10-10 12:00 AM so After I click On edit it is letting me to edit, So If I edit the start date to 2010-10-10 12:00 PM and click on the save button I am stil getting the old start date. which is 2005-10-10 12:00 AM instead of 2010-10-10 12:00 PM
<asp:GridView ID="gvPosHistory" runat="server" AutoGenerateColumns="False" AllowPaging="True"
AllowSorting="true" Width="650px" PageSize="20" CssClass="Gridview" Visible="false"
OnRowCommand="gvPosHistory_RowCommand"
OnRowDataBound="gvPosHistory_RowDataBound"
OnRowEditing="gvPosHistory_RowEditing"
OnRowUpdating="gvPosHistory_RowUpdating"
onrowcancelingedit="gvPosHistory_RowCancelingEdit" >
<Columns>
<asp:TemplateField HeaderText="Start Date" SortExpression="startDate">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblstartdate" runat="server" text='<%# Eval("StartDate")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtStartDate" runat="server" Text='<%# Bind("StartDate")%>' ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="End Date" SortExpression="endDate">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblenddate" runat="server" text='<%# Eval("EndDate")%>' ></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtEndDate" runat="server" Text='<%# Bind("EndDate")%>' ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Functional Job Title" SortExpression="JobTitle">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblFunctjobTitle" runat="server" text='<%# Eval("FunctionalJobTitle")%>' ></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtFuncJobTitle" runat="server" text='<%# Bind("FunctionalJobTitle")%>' ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Department" SortExpression="Department">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblDepartment" runat="server" text='<%# Eval("DeptName")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtDeptName" runat="server" Text='<%# Bind("DeptName")%>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Supervisor" SortExpression="Supervisor">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblSupervisor" runat="server" text='<%# Eval("Supervisor")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtSupervisor" runat="server" Text='<%# Bind("Supervisor")%>' ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Bargaining Unit" SortExpression="bargainingunit">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblbargainingunit" runat="server" text='<%# Eval("BargainingUnit")%>' ></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtBargainingUnit" runat="server" text='<%# Bind("BargainingUnit")%>' ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="UCP Level" SortExpression="UCPlevel">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center"
VerticalAlign="Top" />
<ItemStyle Wrap="False" HorizontalAlign="Left" />
<ItemTemplate>
<asp:Label ID="lblUCPlevel" runat="server" text='<%# Eval("UCPLevel")%>' ></asp:Label>
</ItemTemplate>
<EditItemTemplate >
<asp:TextBox ID="txtUcpLevel" runat="server" Text='<%#Bind("UCPLevel")%>' ></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Edit" SortExpression="Edit">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center" VerticalAlign="Top" />
<ItemStyle Wrap="True" HorizontalAlign="Left" />
<ItemTemplate>
<asp:LinkButton ID="LBPosHistoryEdit" Text="Edit" runat="server" CommandName="Edit" ></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Save" SortExpression="Save">
<HeaderStyle Wrap="False" Font-Bold="True" HorizontalAlign="Center" VerticalAlign="Top" />
<ItemStyle Wrap="True" HorizontalAlign="Left" />
<EditItemTemplate>
<asp:LinkButton ID="LBPosHistorySave" Text="Save" runat="server" CommandName="SavePosHistory" CommandArgument='<%# Eval("UCPLevel")%>' ></asp:LinkButton>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
.aspx.cs
protected void gvPosHistory_RowCommand(object source, GridViewCommandEventArgs e)
{
if (e.CommandName == "SavePosHistory")
{
string arg = Convert.ToString(e.CommandArgument);
System.Web.UI.WebControls.LinkButton btnPosHistory = e.CommandSource as System.Web.UI.WebControls.LinkButton;
GridViewRow row = btnPosHistory.NamingContainer as GridViewRow;
TextBox tSdate = row.FindControl("txtStartDate") as TextBox;
TextBox tEdate = row.FindControl("txtEndDate") as TextBox;
TextBox tFuncJobTitle = row.FindControl("txtFuncJobTitle") as TextBox;
TextBox tDeptName = row.FindControl("txtDeptName") as TextBox;
TextBox tSupervisor = row.FindControl("txtSupervisor") as TextBox;
TextBox tBargainingUnit = row.FindControl("txtBargainingUnit") as TextBox;
TextBox tUCPLevel = row.FindControl("txtUcpLevel") as TextBox;
}
}
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Dec 9, 2010
how to present a .cube created in BI Development Studio as part of a .aspx page? Windows Server 2008 hosting the site using IIS 7. The SQL server and the management studio and the BI Development Studio used to create the .cube are on the same windows server. Am using Visual Studio 2010 Premium to develop for .NET Framework Verison 4. Using an impersonation account to control access to the db.
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May 7, 2015
This is the problem:
Server Error in '/AviaBellaVidaChecklist' Application.
Invalid attempt to read when no data is present.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Invalid attempt to read when no data is present.
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Jun 21, 2010
iam using asp.net2.0 with c#, with backend sql server2000
in my client system i have to create dynamically procedure and return the result
but when iam using in my local system the code is working fine but at client system it it not working
[Code]....
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May 7, 2015
I want to get the total data of my table and store into one variableThis is my code...but it gives me error like 'Invalid attempt to read when no data is present.'
try {
GetConnection();
MySqlCommand.CommandText = "Select COUNT(source) from [dbo].[Company_info] where source = '"+source+"'";
MySqlDataReader = MySqlCommand.ExecuteReader();
if(MySqlDataReader.HasRows==true) {
string sourcecount = MySqlDataReader[0].ToString();
MessageBox.Show("Data Inserted..!! : "+sourcecount);
}
}
catch {
}
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Feb 6, 2012
I want to write such function that converts data present inside div to image. that data can be anything text or image.
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