Forms Data Controls :: >>>Load Gridview Using Objectdatasource After Pressing A Submit Button?
Sep 23, 2010
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?
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Nov 12, 2010
I 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.
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Feb 1, 2010
I have a asp:button in template field of gridview, I set command name for this and in grid I mention on command event. On clicking the page it shows error message is :
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Below is my code
<asp:GridView runat="server" ID="gridManageClients" AutoGenerateColumns="False" OnRowCommand="gridRowCommand">
<Columns>
<asp:BoundField DataField="Clientid" ItemStyle-Width="75px" />
<asp:BoundField DataField="ClientName" ItemStyle-Width="300px" /> [code]...
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Feb 1, 2010
I have a asp:button in template field of gridview, I set command name for this and in grid I mention on command event. On clicking the page it shows error message is :Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/>
[code]...
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Nov 10, 2010
I have a page with multiple textboxes and each has a button associated with it. This works as a search 'hub', I suppose, where the user can search by ID, name etc. When entering a search term for e.g. name however, pressing enter 'clicks' the very first button on the page (ID search), causing an error if the associated textbox is empty (which it would be if someone meant to search by name). I have attempted to rectify this using JQuery, and have written the following:
$('input:text').click(function (e) {
e.preventDefault();
$(this).next('input:button').focus();
});
I'm simply using the click event so that I can monitor where focus is redirected, but eventually I would use .keypress. However, nothing happens upon clicking a textbox and I can't see for the life of me what is wrong with the JQuery. To elaborate on the problem, the .NET code used looks similar to the following throughout the page.
<tr>
<td style="width:100">Company ID</td>
<td style="margin-left:3px;">
<asp:TextBox ID="...TextBox" runat="server" Width="230px"></asp:TextBox>
</td>
<td>
<asp:Button CssClass="Button" ID="...NameSearch" Text="Search" runat="server" /></td></tr>
This is generating this (view source):
<td><input name="...TextBox" id="...TextBox" style="width: 230px;" type="text"/></td>
<td><input name="...NameSearch" class="Button" id="...NameSearch" onclick="javascript:__doPostBack('...NameSearch','')" type="button" value="Search"/></td>
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Jul 24, 2010
I have a databound Gridview (with a LINQ datasource). The gridview displays questions from the SQL DB to the user. I've inserted a radio button list into the gridview with 3 horizontal radio buttons with fixed values of 1,2,3 for the user to select. I have a question ID, a tempuserID, and AnswerValue columns set up in the database. It all works nicely.
After the user selects radio buttons, I would like for them to push a button to submit the QuestionID, the associated Radio Button Value (AnswerValue) and their tempUserID into the DB. How do I do this? I'm not sure what to do next and what VB/LINQ code to put in the code behind file in the button click event handler. I'm also not sure on what to use for the tempUserID, can I use the sessionID? I'm using VB and here's my code:
[Code]....
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Mar 26, 2010
I have a form that I am using with jquery for an application... everything is working fine but I have one issue....I do not want the form to submit when the user presses the enter key... if they press the enter key it will reset the whole sequence and I am running through an array that is placed in the system memory of the client(client-side javascript)is there a way to capture this event properly? Are there other ways that could submit the form?
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Dec 21, 2010
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.
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May 26, 2010
I have a button in gridview footer template ....Wat i need is on gridview item template last textbox of the row , i will press enter key then the enter key should be focus to the button and button click event should be fired ......
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Dec 20, 2010
Is there a way to load a gridview with a button rather than on page load?
Right now I'm trying by making enabled = false and visibile = false and then changing them via c# on the button_click event but its not working out. I get the error:
Data keys must be specified on GridView 'GridView1' before the selected data keys can be retrieved. Use the DataKeyNames property to specify data keys.
The gridview is dependent on several dropdown boxes which is why it shouldnt load until the button is pressed.
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Aug 14, 2013
in 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
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Nov 27, 2010
In one of my application, I have around 2000 records which i am displaying in gridview with normal paging.
Now I want to change this paging facility and would like to show a "more" button at the footer(just like [URL] has). The moment user clicks it, the next set of data will be retreived. This will go on till all the records are fetched.
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Feb 25, 2011
on the form i have one dropdown and search button. Accroding to selected value of dropdownlist, on pressing search button user will see results in gridview.now in after the result is shown and user selects say page 2 then results are shown of page 2. But then if i select new dropdownlist value and press search, it shows result but directly goes to page 2(last time's page selected) instead of showing page 1....
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Jan 4, 2011
I have a Gridview control in asp.net with C#.
In my application when I press the edit button from Gridview I need to open the information in another window. At this moment I use 'Response.Redirect("..")' but it opens in the same window.
I've tried:
[code]....
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Jan 4, 2011
With the following htlm:
<html>
<body>
<form action="#">
<p><input type="text"></input></p>
</form>
</body>
</html>
[code]...
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Feb 18, 2010
I have a page with a GridView populated from an ObjectDataSource. The data source has some select parameters which are used to filter the data. I have a button and when clicked the GridView is filtered as expected. However I have other controls on the page which do not relate to the Gridview. When these control are clicked the gridview is filtered again.
How do I setup my page so that only one control updates the datasource?
Sample code below
[Code]....
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Aug 2, 2010
table a
a1 a
1 qw
2 asa
i have two grid views
gridview1 has check box[a1] and one value[a](in total two columns) with objectdatasource1 for datareferencing from database
another gridview2 has to select only the selected/checked value of gridview1 of checkbox1
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Feb 9, 2011
I'm facing a wierd problem with GridView and ObjectDataSource. I bind GridView to my business objects via ObjectDataSource. Everything was working fine until I decided to add a new field in my buisness object and wanted to add a column to GridView to show it. Somehow that column is NOT shown in the GridView's list of available columns. I have tried refreshing schema, rebinding, etc. I'm using GridView inside a user control which is used as a web part. Does that make a difference ?
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Dec 6, 2010
I 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;
}
}
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Jul 16, 2010
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]...
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Feb 3, 2010
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.
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Sep 21, 2010
I have a grid that receives products over a GetList methods via ObjectDataSource. The Product class contains also a Object Supplier. If I change in the drop down list of the grid the supplier for a product and I click update the ID of the suppliier is still the same. I have debugged the call of the update method and checked the parameter in the product object. I wrote the following code in the SelectedIndexChanged event and the text box shows the right id but not the update method.
DropDownList supplier = (DropDownList) sender;
txtTest.Text = supplier.SelectedValue;
Here is the code of my grid view:
[Code]....
My Object Data Source calls the following Update Method:
[Code]....
The next work around idea would be to call the update method manually in the Update Event of the grid view.
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Mar 19, 2010
Can you post of an example of Gridview with EditItemTemplate using ObjectDataSource as data connectionand Update the the specific row. Ihave lots of sleepness night with this problem.
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Feb 9, 2010
I've been working a gridview that uses an ObjectDataSource to perform either select, insert, delete or update. I was able to get everything to work correctly with the GridView except when it came to performing an update. My first issue that I came across was that it was tacking on two extra columns or fields that I didn't really expect. The function being called (SavePipelineUser) only expected 4 parameters and was getting 6 in total. This was occuring even though I had placed OldValuesParameterFormatString="original_{0}" or OldValuesParameterFormatString="{0}" within the GridView's attributes.
Ok, So I was able to resolve this issue by going into the OnUpdating event in the ObjectDataSource and doing the following below. This effectively removes the additional parameters from being added. However, I now have a new problem. There doesn't appear to be any values actually being passed into this method. So, while no errors appear, nothing gets updated. Can anyone explain to me why my values are not being carried forward? I've spent about a day and a half working on this issue and was able to get around this by just going with the GridView's RowUpdating event and grabbing values from grid to manually get it to update. While I'm very happy for anything to be working after so much time, I still feel like this is a bad hack for this to work. I have a hard time fathoming why this seemingly simple use of the GridView on my part has turned out to be very complicated. I'm extremely leary now of using the ObjectDataSource object for anything if it's going to be this much of an effort.
<!--html code-->
<asp:GridView ID="gvPipelineUsers" runat="server" AllowPaging="True"
AllowSorting="True" DataSourceID="objCommon" AutoGenerateColumns="False" ShowFooter="True"
[code]...
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Jan 27, 2010
I'm using a GridView with an ObejctDataSource. The data is provided by a business object and not a DB. It returns a list of people and each person belongs to a group. Now I need to filter data. For example, I need to return list of people in specific groups. How can I specify a list of groups to be able to filter the data ? Could I use SQL like syntax ? I understand the filter expression works only when data is returned as a datatable. But in my business object I maintain data as hashtables and return as List<PeopleInfo>. Do I need to return list as datatable instead ?
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