I have a modal popup and a GridView in it. The GridView is populated programmatically, i.e. I use .DataBind(). I can enter data into some of the GridView's controls. After I press Submit, I expect to do something with the entered data. But in the button press handler, the GridView is empty. I realize that I have to DataBind() again in the handler, but how can I preserve the data the user enters?
View 11 RepliesI have a Drodownlist , hich is being filled with data from tables at Page Load with the check that Postback is false. Now I want to insert the selected value of dropdownlist to the table, but after pressing the Submit button, its numeric value is getting lost and is substituted with a "" (blank). How do i persist its value.
View 6 RepliesI have a gridview which i have enabled paging. When i select a page in the footer, the page postbacks, and I lose all data.I am lost on how to enable paging and maintain the data in the table.I manually insertthe information into a datatable then bind because of the way i have to get the information.Here is what I have so far:
[Code]...
I have a submit button on form and want to read all the values from a gridview and the embeddd dropdownlists within some of the columns of the gridview.The gridview is added programmatically and therefore I use findcontrol to find it and then use it to iterate through the rows:
[Code]....
When i step throught the code the values are coming back as empty strings although they are populated on the form? Some of the columns are dropdownlists also and I am attempting to use findcontrol to get these values also but the are just not finding the ddls (i.e null reference)
I have webpage containing 3 views of multiview control. In the first view there are 3 fields Name Age Surname
which will be captured in the textbox for the respective fields.In the second view i have three more fields
sex
maritalstatus
bloodgroup
which will be entered in the respective textboxes and a submit button to store the data in both the views in the sql server database. I have all the fields in the sql server table which are mentioned in the webpage.I need the complete code for storing the entered data in both the views of the multiview control after hitting the submit button.
I have a c# code that put some background color in cells according with some values, the problem is that each time I add a button or a postback occurs I lost all colors (and other attribs).So my workaround in call the function that fills the gridview each time... but this produce a slow performance.
View 4 RepliesI'm trying to do databind with listview, datapager, and objectdatasource.When I just change the page number, it works correctly. But, when I sort a column and change the page number, it lost the sort expression. How do I fix the issue?
here is the source code
aspx page
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:UpdatePanel ID="updMaster" runat="server">[code]....
The grid view row command does not execute on my production environment. This is a intermittant issue. I am not able to reproduct the exact steps but it does occur too often.
I have a load balanced environment with 2 identical servers in the farm. The servers are running on IIS 7.5
The other scenario in which I observe this is when the session times out. In that case the grid view events are lost. But this scenario is not a priority for me. I need to resolve the first scenario.
Any help on this or some useful links on "Understanding the session" or "understanding the complete event firing and execution" is welcome.
An update: we are overriding the PageStatePersister as:
[Code]....
In design time I created a Gridview and a delete button in a page test.aspx:
[Code]....
The program stopped at statement "if ((row.Cells[COL_INDEX_SELECTED].Controls[0] as CheckBox).Checked)",
because it cannot find the checkbox created before.
I tried to shift all the code in Page_Load to Page_Init, but the ticked checkboxes are still lost.
I could find the ticked checkboxes names in its request object parameters(this.Request.Params.AllKey) if I setup a breakpoint on the error statement.
Does anyone konw what's happening and how to retrieve the selected rows?
I have a rather large gridview that I need to page. the follwoing is my code but when I try to page it gives me a internet lost connection error??? I have not gotten to work in dot.net 4.0 this code is from one of my projects in 1.1 where it works fine but for some reason it is changes for 4.0.
[Code]....
I have a gridview control that extends the default gridview. I have added an attribute called "hiddenSelectedValues" to to the gridview during the "PreRender" event and I have a private variable that points to the value of that attribute.
I have some javascript code that modifies the value of this attribute based on the user checking or unchecking checkboxes in the grid. I have confirmed that the javascript is indeed modifying the value of the "hiddenSelectedValues" attribute by using Firebug to see the change as it happens.
However, once a postback occurs, the grid looses the updated value of this attribute and I am unable to reference get the updated value on the server side.
How do I keep the value of an attribute changed by javascript on postback?
I have a detailsview which includes a drop down list bound to an array. However, when I click on the cancel button the dropdownlist values disappear. I have tried to solve the problem by rebinding the values back into list on the cancel command event, but this has made no difference. Does anyone know how to solve this?
View 2 RepliesI have 2 gridviews in an aspx file. The First one is master grid, and the second one is detail grid. (such as Customer and it's Invoices) First, I load data into master grid. I use FireBug and notice that every row has it's row id, such as:
<tr onmouseover="javascript:SetRowColor('ctl00_ContentPlaceHolder1_grdResult_ctl02',0);"
id="ctl00_ContentPlaceHolder1_grdResult_ctl02">
.....
</tr>
Then, in master grid, I select a buttonfiled in a row to load the second gridview.Every thing alright, the second grid has it's row id But The master grid lost all row id that I dont know the reason why?
I want to submit the form with post method, but before that i want to do some processing in CS file, after the processing is done then the form will be submitted in post manner like <form method="post">
View 7 Repliesin my asp.net+vb web with access database. i have gridview. i had added a form with submit button to add the data in gridview.
i am using accessdatasource to bind the data to gridview.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectString As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:webauth.mdb"
Dim con As OleDbConnection = New OleDbConnection(connectString)
[Code]....
even after the data inserted message flshes the data inserted is not viewed in the gridview . when i press F% or refresh tha page the gets displayed in gridview. how can i solve the problem
[Code]....
I have three drop down lists that are all databound to a gridview. When the user selects 1. a school, 2. a house number, and 3. a street from seperate drop down lists, bus stops for that address are displayed in a gridview. Everything works fine. After the user selects a valid school/house number/street combination the gridview automatically displays. I would like to add a "Submit" button and not have the gridview display until this button is clicked.
View 6 RepliesI am trying to edit data using checkbox value. Firstly, I created popup window which using querystring some data from main page. In popup window, I want to change the checkbox value. For example, I made setSpare column and given the value to show bit data type such as 0 or 1 using checkbox(false or true). If some data has non setSpare(means 0), it wil lbe come out uncheckbox. If I want to check it and clicking submit button, It was not change. I am going to show the code below.
public partial class AddSpare : BasePage
{
string ObjectId;
protected void Page_Load(object sender, EventArgs e)
{
ObjectId = Request.QueryString["ObjectId"];
displayComInfo(ObjectId);
}
protected void displayComInfo(string ObjectId) // it informed relative data on web through using DB.
{
string query = "usp_ShowComputerList";
try
{
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["SCSConnectionString2"].ConnectionString))
{
SqlCommand cmd = new SqlCommand(query, conn);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
SqlParameter paramobjectId = cmd.Parameters.Add("@ObjectId", System.Data.SqlDbType.Int);
paramobjectId.Value = ObjectId;
conn.Open();
SqlDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
ModelTxt.Text = dr["Model"].ToString();
ModelTxt.ReadOnly = true;
ComputerTxt.Text = dr["ComputerName"].ToString();
ComputerTxt.ReadOnly = true;
userTxt.Text = dr["UserName"].ToString();
userTxt.ReadOnly = true;
ntTxt.Text = dr["NtLogon"].ToString();
ntTxt.ReadOnly = true;
HDDTxt.Text = dr["HddSize"].ToString() + "GB";
HDDTxt.ReadOnly = true;
RAMTxt.Text = dr["MemorySize"].ToString() + "GB";
RAMTxt.ReadOnly = true;
SerialNoTxt.Text = dr["SerialNo"].ToString();
SerialNoTxt.ReadOnly = true;
TextBox1.Text = dr["Spare"].ToString();
inputChkSpare.Checked = (bool)dr["Spare"]; //(bool)dr["Spare"] display false or true.
dr.Close();
}
}
}
catch (Exception ex)
{
MessagePanel1.Type = MessageType.Error;
MessagePanel1.Text = MessagePanel1.Text = "This is an error." + ex.Message;
}
}
protected void okBtn_Click(object sender, EventArgs e)
{
string query = "usp_SetSpare";
try
{
using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["SCSConnectionString2"].ConnectionString))
{
SqlCommand cmd = new SqlCommand(query, conn);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
SqlParameter paramobjectId = cmd.Parameters.Add("@objId", System.Data.SqlDbType.Int);
SqlParameter paramspare = cmd.Parameters.Add("@spare", System.Data.SqlDbType.Char);
paramobjectId.Value = ObjectId;
if (inputChkSpare.Checked == true) // if I change the check box, it does not bring the changed value. It will bring the above value(already displayed thing)
{
paramspare.Value = "1";
}
else {
paramspare.Value = "0";
}
conn.Open();
cmd.ExecuteNonQuery();
cancelBtn.Value = "Close";
okBtn.Enabled = false;
MessagePanel1.Type = MessageType.Information;
MessagePanel1.Text = "This computer is spare from now.";
}
}
catch (Exception ex)
{
MessagePanel1.Type = MessageType.Error;
MessagePanel1.Text = MessagePanel1.Text = "This is an error." + ex.Message;
}
}
I'm using objectdatasource to get my data. it works fine. Thecurrentway how it works. When the page opens it loads the gridview.but I don't want this.I would like to load the gridview after I press a submit button. so infact after postback...I tried to remove the select Method in aspx and set programmaticallyin the submit button eventhandler but then I get an error thatSelectmethod is not set.Can someone advice me how I can load the gridview usingobjectdatasource after pressing a submit button?
View 20 RepliesSome say it is not a bug it is default in asp.net. but for me it is a bug in logic. When you say refresh it should be reload the component that you are refreshing. But in asp.net i notice that they recalling all activity and viewstate like event and data that are triggered in the previous postback. My opinion it is a redo not refresh. this is only my observation on the issue dont hate me on this microsoft fan.
on aspx page:
private
static string __VIEWSTATE_FETCH;
protected void Page_Load(object sender,
EventArgs e){
[Code]....
I would like to hide a submit button if a DataList is empty. I don't really know the code. If you submit an answer please show me the code also. I have to do it in VB.Net. I googled and found the following code that I place in the code behind under the Page load event.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim dv As DataList
dv = SqlDataSource3.[Select](DataSourceSelectArguments.Empty)
[code]...
I often have some controls (like TextBoxes) for input parameters at the top of a page followed by a ListView to show the results.
When submit is hit, the LIstView shows the results using ControlParameters in the SqlDataSource.
My problem is when you first navigate to the page, the EmptyDataTemplate is shown. This can confuse users.
What is the Best Practice for not showing the ListView or EmptyDatatemplate until there has been a Submit button press?
I can not get the Selected Item value in in GridView Dropdowntemplate Feild
I Get Only First index item text value
string ItemSkuCode = ddlIMEntity.SelectedItem.Text + "-" + txtIMItem.Text + " -";
foreach (GridViewRow tempr in gvParameter.Rows)
{
DropDownList ddl = (DropDownList)tempr.FindControl("ddlParameterValue");
// string str1 = Request.Form[ddl.UniqueID.];
if (ddl.Items.Count > 0)
[CODE]..
I am trying to sort in gridview however I got some error message in _dopostback function which shows "Microsoft JScript runtime error: Object doesn't support this property or method" at theForm.submit()
my user.aspx.cs shows as follows
[code]....
Actually i have Textbox in Repeater, while entering value to the textbox and comes out from the textbox, the data which entered in textbox should stored in database.
View 1 Replies