I'm writing a gridview in VB.NET that is bound programatically in the Page_Load function. I am binding the data in the 'If Not Page.IsPostBack Then..." structure. And as you can see, I'm using TemplateFields instead of BoundFields. And I need to access the e.OldValues in my RowUpdating function, but they come up empty.
Here's my code:
[Code]....
I am using gridview control in asp.net and doing insertion using template field in gridview. In c# i am getting those textbox values by type casting and id should return a integer value. i enter values in all fields of gridview and giving a command name as AddNew to insert the new values, insertion takes place but all fields are empty and id field is 0. how to take the values from textbox and also i should return a integer value for id. i paste my code below.
protected void OnRowCommand(object sender, GridViewCommandEventArgs e)
{
TextBox txtNewName = (TextBox)GridView1.FooterRow.FindControl("txtNewName");
TextBox txtNewpwd = (TextBox)GridView1.FooterRow.FindControl("txtNewpwd");
TextBox txtNewId = (TextBox)GridView1.FooterRow.FindControl("txtNewId");
TextBox txtNewEmail = (TextBox)GridView1.FooterRow.FindControl("txtNewEmail");
TextBox firstName = (TextBox)GridView1.FooterRow.FindControl("txtNewFirstName");
TextBox lastName = (TextBox)GridView1.FooterRow.FindControl("txtNewLastName");
TextBox designation = (TextBox)GridView1.FooterRow.FindControl("txtNewDesignation");
if (e.CommandName.Equals("AddNew"))
{
int id = Convert.ToInt32(txtNewId.Text);.......
I have a gridview with two bound fields. On clicking a button i want to display the values in first row of gridview in two textboxes. But if gridview cell is empty i am getting the text in textbox to which the value of cell is given as -' 'i know my problem will be solved if i use the template fields instead. But i want a solution while maintaining the bound fields ,if any.
View 2 RepliesI have a grid which is binding to a objectdatasource and when it is in edit mode, i am displaying a form template and wanted to bind all the values. I have one field called ApprovedCode. In the edit mode, i am displaying all the codes drop down list box and making a bind on the selectedvalue and i dont know how to handle when it is empty. When it is empty i wanted to display "Select..."
I followed this forum post but i am getting error
[URL]
This is my code
[Code]....
This is the error message that i am receiving
"ddlApprCode' has a selectedvalue which is invalid because it does not exist in the list of items
this is my sql query and its work fine in my code but it only check ParentDeptID IS NULL it not working when ParentDeptID field is empty how can i check it
("select DeptID,DeptName,(select count(*) FROM HrDept " _
& "WHERE ParentDeptID=sc.DeptID) childnodecount FROM HrDept sc where ParentDeptID IS NULL ", _
objConn)
If the gridview binds to empty dataset, I need to still show a gridview so that users can ADD more using the textfields in the bottom of the footer template. Since the gridview is empty it won't bind not allowing rendering of the <footer template> I guess I should create a empty dataset if the gridview is empty. How do I check for this and can this be done in GridviewRowEventArgs
View 5 RepliesI'm trying to generate a dropdownlist in a GridView. However, my dropdownlist seem to be empty and I'm not sure how to fix it. Here's my code for the dropdownlist in my GridView & it's SqlDataSource.
DropDownList in GridView:
SqlDataSource for DropDownList:
[Code]....
I bind data to GridView from SqlDataSource. GridView have <19 rows. But i want that all 19 rows are written. If Rows in SqlDataSource are empty it's must be empty in GridView but must be there!
View 2 RepliesHow to display empty GridView to insert new record if no data retreived for some record on the result from data table?Actually i am trying to give a user an option to add recrod from Gridview. On result of some query it is perfectly displaying data and a footer row with the insertion textbox but when there is no data in the gridview it is not displaying. It should display with footer having insert textbox.
View 5 RepliesI have a gridview and i wanted to add a row when the gridview is empty, so that the header would be shown anyway. I have read about it on the web but i can't quite understand where exactly should i add the row.
My grid is binded by a sqldatasource. I am already adding a second header for the grid (to display some filters, and they need to be shown even if there are no results so that the user can perform another "search"), on rowCreated event, so, where am i supposed to add the row? Which events are fired even if the gridview is empty?
provide an example to do that... "Hide column if row is empty" in Databound()
datasource could be .1
coulmn: id-value1-value2-value3
row: 1-4-3-NULL (output: hides row value3) because the value is NULL
.2
coulmn: id-value1-value2-value3
row: 1-4-NULL-NULL (output: hides row value2,value3)
I have a Gridview and I want to hide a column when empty. The code works then the column is in Boundfield but not in Templatefield. Can anyone show me the code of how to do it in Templatefield?
Here's my code using OnDataBound event:
protected void hideColumn(object sender, EventArgs e)
i have a gridvew on my page as below and above it is a heading. If the gridview is empty
then the page is blank but the header above is still there which does not look right. SO i want to hide the header as well but dont know if I can put the <h1> in the gridview or do i need to call some other code to check if gridview is empy and then hide the DIV??
[code]....
I am using ObjectDataSource as a datasource for the GridView. ObjectDataSource has folowing select parameters
[Code]....
And the selecting event of ObjectDataSource is
[Code]....
GridView has EmptydataRow which I want to hide when Session["TodaysDate"] is null. I tried
[Code]....
But still EmptyDataRow will appear
When retrieving values from Gridview empty cells, you will get " " instead of a empty string or null.
Someone once change the columne's properties as following, but it doesn't work
ConvertEmptyString > true
HtmlEncode > false
HtmlEncodeFormatString >false
One solution is to check if the cell value is " ". If so, assign it an empty string. But this approach looks awkward.
I have a GridView which works perfect when it is not empty. Now when the source is empty I want to show an empty GridView and to be able to insert rows inside.
I have this code for the page_load event:
[Code]....
but I got the following error:
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
I have followed this thread
[URL]
and I have tried most solution and still I cant get the right results...I need a simple workable solution. I would like to display the header of a gridivew when it is empty
I've got a gridview in which I have a footer that I use to insert rows into the grid. However, if the grid is empty no data is displayed (including the footer). Is there a way to still show the footer row so a user can insert additional rows into the grid despite it starting out as empty?
View 5 Repliesi want to create empty gridview in c# web application,having 4 columns,columns are editable,final column contain buttons for save,insert new entry n delete,on save button clicking datas inserted into the column fields are inserted to database,on delete button clicking specified row is removed and on add new entry button clicking another empty rows with above fields are appended below.
View 3 Replies[Code]....
Dynamic Gridview is Empty on RowUpdating
i designed a gridiview, within that ItemTemplate i drew an table then tr then some of td's, now the problem is after every row im getting one empty row. below is my code
<ItemTemplate>
<table cellspacing="0" cellpadding="0" style="border-right:1px solid Black;" >
<tr >
<td width="1%" align="center" style="border-right:1px solid Black;">
<span style="">
<asp:ImageButton ImageUrl="~/inc/img/img1.gif" runat="server"
CommandName="Expand" Style="display: none" Width="11px" />
</span>
</td>
<td width="5%" style="border-right:1px solid Black;" > <%--onclick="ShowMenu( <%# Container.DataItemIndex + 1 %>);--%>
<asp:Label runat="server" Text='<%# Eval("data1")%>'></asp:Label> </td>
<td width="5%" >
<asp:Label runat="server" Text='<%# Eval("data2")%>'></asp:Label>
</td>
</tr>
</table>
i was able to implement a gridview with insert, edit and delete features, but I NEED to be able to display an empty row for insert even if the select statement returns no row. How do I do that?
Here is the code I have so far:
<asp:Label ID="Label2" runat="server" Text="Accession # "></asp:Label>
<asp:TextBox runat="server" ID="accession_num" AutoPostBack="True"></asp:TextBox>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:pdmstestConnectionString %>"
[Code]....
i take data from Sqlserver database , and my prblem is that i want to get old and new values from gridview and base on that i want to change there background colors .. i try gridview rowupdating , editing ,updated Events but when i debug no break point hit and there was no value in ViewSate that i declare ,
View 2 RepliesI would like to find controls in the detailsview control placed in the EmptyData Template of the gridview. I am trying to create Insert new record for the gridview control.
1. If there are existing records in the table - works fine and sets my two values: I placed Detailsview and Insert Button in the footer of the gridview. I needed to set the values of two fields. When I click on the Insert button it saves new record and sets the field with the value (code attached - works fine). I also have a popup extender that opens detailsview - this works just fine.
2, If ther are not records in the table - saves record but cannot find and set controls on the detailsview Same thing setup in the EmptyData Template. The record is saved but I cannot Find and set the field value on the control.
1. Link button (on click) in the gridview footer (works fine)
protected void LinkButton1_Click1(object sender, EventArgs e)
{
string zupa1;
zupa1 = ddlSelectEmployee.SelectedValue;
try
{
DetailsView zupa = (DetailsView)gvTraining4.FooterRow.FindControl("DetailsView1"); TextBox zupa2 = (TextBox) zupa.FindControl("txtInsertEmployee");
zupa2.Text = zupa1;
}
catch
{
}
DetailsView dettraining = (DetailsView)gvTraining4.FooterRow.FindControl("DetailsView1");
TextBox training = (TextBox) dettraining.FindControl("txtTrainingType");
training.Text = "4";
}
2. EmptyDataTemplate.FindControl - can save record but cannot access txtInsertEmployee and txtTrainingType
DetailsView zupa = (DetailsView)gvTraining4.EmptyDataTemplate.FindControl("DetailsView1");TextBox
zupa2 = (TextBox)zupa.FindControl("txtInsertEmployee");TextBox
training = (TextBox)dettraining.FindControl("txtTrainingType");"4";
I have a 3 text boxes. When i enter datas in and click the button it displays the gridview with filtered data. Now my problem is if there is no data in gridview it has to show "no data" so I used emptydatatext property.. The problem is, in the page load itself it shows "no data"
View 3 Replies