I'm attempting to create a mailto in a gridView as follows:Code Behind (Page_Load)
[Code]....
ASPX Page
[Code]....
The hyperlink field will not grab the mailString variable. It's blank whether I use my constructed string or just the basic "TEST" string. What am I doing wrong?
Nested GridView Control returns "Object variable or With block variable not set" when outer GridView returns rows.
The Nested GridView Control works as long as the outer GridView returns rows, the following code works: [Code]....
Object variable or With block variable not set.
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.NullReferenceException: Object variable or With block variable not set.
Source Error:
Line 118: If e.Row.RowType = DataControlRowType.DataRow Then
Line 119: Dim myStatus_ID As SqlDataSource = CType(e.Row.FindControl("sqlDeviceStatusAssign"), SqlDataSource)
Line 120: If Not e.Row.DataItem("Status_ID") Is Nothing Then
Line 121: myStatus_ID.SelectParameters(0).DefaultValue = e.Row.DataItem("Status_ID")
Line 122: End If
I have tried checking for IsDbNull and checking to see if a label exists in a given row. This code *If Not e.Row.DataItem("Status_ID") Is Nothing Then* appears to do nothing.Same with the following:
*Dim localLblItemReference As Label = CType(e.Row.FindControl("lblItemReference"), Label)
*If Not localLblItemReference Is Nothing Then
******************************************************************************************
To further clarify my question above, I am looking for a method to detect e.Row.DataItem("Status_ID") is nothing/null due to the outer GridView returning 0 results in a query.I have a (Outer) GridView Control with another GridView Control inside of a template field with it's associated SqlDataSource control.
In the "Protected Sub GridViewReport_RowCreated", I provide the Select Parameter for the associated SqlDataSource with the DataItem row value.When the (Outer) GridView Control does not return any rows, the "e.Row.DataItem("Status_ID")" throws a:
Exception Details: System.NullReferenceException: Object variable or With block variable not set.
I need to get the value from a field in a GridView and and set that to a Session variable, however, it does not seem to be working...
Here is what I have:[Code]....
I am getting System.NullReferenceException: Object reference not set to an instance of an object.
I believe my SQL statement is sound. UPDATE [062610] SET abc = @abc FROM [062610] WHERE (dayID = @dayID) I cant seem to get my stupid variable @abc to sync with my GridView update command. I understand that I can let the GridView take care of my editting for me without having to write any code. But, I am running multiple tables and will be eventually needing to do this manually. Or at least as far as I know.
View 3 RepliesOn Page1 of a project, I have a Gridview showing a table of customer names (showing CustID, CustName, CustJoinDate). When I click on a record, I have passed a querystring to Page2 showing an address table for that customer. This part works for me.
The SQL statement in simply: Select * from CustAddress where CustID = @cust
What I would like to do though, is capture that @cust to a session variable so that I can use it later on.
i calc the sum of columns using:
begBal = Utilities.SumDataColumn( "begBal", dt);
Then in the rowDataBound event i add the total to the gridview footer:
[code]....
I would like to know how i can set the gridview display=false if the begBal variable above =0?
also I set the format of amount columns in the html and code as {0:n2}. How could i add a check box to show no decimal places {0:n0} in the grid (columns and footer)?
For example:
<asp:HyperLinkField Text="Edit" NavigateUrl="EditPage.aspx?var1=Variable1&var2=Variable2" />
I realize this can't be done through the page's mark up, at least I think this is so, but if someone could explain the easiest way the concept could work I'd be very appreciative. Basically, I just need a user to be redirected to a page with more than one variable in the url. If you are unclear with what I'm asking don't hesitate to ask me to explain a little better.
I have implemented globalization in my website by using Global Resources. I thought of implementing it not only on controls but in database fields. So for some columns which would be single columns in normal conditions, I considered multiple columns for different culture. For example if there was a [Title] column, I replaced it with [Title-en-US], [Title-en-GB], [Title-es-ES] and etc.I have a web page with a GridView control that displays the content of that table. In a normal case (without globalizing), I would have a TemplateField in the GridView like this:
[Code]....
I have columns for each culture defined in the system so that based on the user's choice, I display that corresponding column content.My question is I have no idea what I should set the Text and SelectedValue properties in HTML code above.Something like this: Text='<%# Bind("myTable.[Title-" + TheSelectedCulture + "]") %>' !!!!!
[Code]....
[Code]....
Get Gridview item template textbox value to string variable?
I have a webform developed in VB.NET and I am facing a strange problem. In the webform I have a GridView control which has two bound fields (Item # and Item name) coming from a master table and infront of these two fields I have placed a TEXTBOX control as TEMPLATE FIELD to take any value of particular item. But after filling all the textboxes when i clicked on submit button it loops thru the items and there i need to read the textbox value of that particular item in a variable but unfortunately the value is blank even the data is there. Here is the ASPX code.
[Code]....
Here is the Code behind
[Code]....
I am unable to access the data in the gridview's selected row. I have done this lots of times but must be forgetting something.
Here is my gridview:
[Code]....
[Code]....
[Code]....
I have a dropdownlist outside the gridview control. My griview control also have dropdownlist in the first column. I want to populate the dropdownlist inside the gridview control for all rows when the selected item is changed in the outside dropdownlist.
View 2 Repliesstore textbox(inside the gridview) information in single variable"
View 3 RepliesI have nested 2gridview. I want to access textbox in second gridview footertemplate. How can I do this.My code is
[Code]....
Code Behind
[Code]....
Iwrite this code but I get
Object reference not set to an instance of an object.
I have a nested gridview which has been working fine. Now I need to turn the inner gridview off based on some condition: a IF block is added to the existing RowDataBound event of the outer gridview. Now I'm getting "the Object reference not set to an instance of an object" error. What should be the proper way to go about this? The code:
[code]....
In addition, is there a way to "switch" columns of the inner gridview? For example, column 1 is "City", column 2 is "Price". If user selects to sort by "Price", I woud like column 1 be "Price" and column 2 be "City". Is this has to be done programmatically or if there's other way?
How to display the string data stored in a string[] variable into gridview?
View 9 RepliesI am using three listviews on a page ... the first is always populated ... the other two are sometimes populated I want to total amounts and counts from all three ... so I set up steps in the DataBound events works great when all three listviews are populated the error "Object Variable or With block variable not set." occurs when LV2 or LV3 is not populated I've tried testing DataItem ... Is Nothing but get the failure on the If test instead
View 3 RepliesWith reference to the following link: [URL]
I have a column on Page1 gridview which holds Edit and Delete button.My question is how can i remove or hide the Edit and Delete button column on Page2 gridview so that the buttons are not visible?NB: The Gridview is tied to a session which was from page1. So on Page2 the buttons should not be seen...
I have this interface of multilevel grid built in VStudio 2010 using asp.net.My grid will show the 2nd level then the 3rd (2nd grid as its parent) when plus signs are clicked. however the parent gridview loses its original width when the panel shows up. Is there a way to maintain its width so the design will be as is. See the picture by clicking the link
Attached image ....
This is my code and i am only able to edit the one data under the category school.But what i nd is to edit the other categories like the name,email...etc..how do i modify my code in the update command.Another thing is to delete the data how do i do that?
[Code]....
I have the code below. If there exists gridview within gridview, how can I access hdnOrderLineID from
gvwComponent_RowDataBound in inner gridview RowDataBound event. What should be the syntax???
[Code]....
I have created a gridview at runtime. See code snippet. My problem is when I hit edit on the gridview, and check the ManuallyResolved checkbox in the 2nd column, and hit update, it won't update. I'm not sure how to get the update to work with the dynamic checkboxfield. I just don't know what the code is and in what procedure to put it in.
[URL]
I have a gridview. In my RowDataBound handler I'm doing some things to columns, and accessing them like this for example,
e.Row.Cells(7).BackColor = System.Drawing.Color.Salmon So, of course when I rearrange the order of my columns everything breaks.
Isn't there some way to give an ID to a column, and say e.Row.Cells("TotalColumn_ID") ?
Will this work? Do columns have IDs?
I am using C# with Access/SQL databases. I have this piece of code for a nested gridview using access database working fine:
private AccessDataSource ChildDataSource(string strProjectCode, string strSort)
how to access the last column of a gridview whose number of columns are varying
View 6 Replies
