Forms Data Controls :: Passing Variables Into And Out Of Mysql Query
Jan 9, 2010
First up i would like to apoligize for these questions that are proable realy easy. I have been put on the spot by my boss and have been told to change all my php to asp.net c so it can go in this new cms i have at work. I have just spent the last 18 hours trying to get this to work and im geting a little desperate.
Ok so my current issue is that i dont know how to add html formating to a result string i pull out of my mysql database. I have my result sheet pulling into a gridview, what i want to do is put some information drawn from each row in the gridview out side of the <Tr> tag. Is this possible? But within the Table Tag second issue is it possiple to feed data into a page and then run a mysql query like i was doing in php.
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May 20, 2010
I've a requirement that I need to read an excel sheet programmatically using asp.net/C# and write the data obtained into a mysql table.The excel sheet contains something around 50 columns and 2000 records.I am able to read the data from the excel sheet and store it in a dataset.I am using the following code to write the data into mysql table.
for (int i = 1; i <= myDataSet1.Tables[0].Rows.Count - 1; i++)
{
MySqlCommand cmd = new MySqlCommand();
for (int j = 0; j <= myDataSet1.Tables[0].Columns.Count - 1; j++)
{
paramset[j] = myDataSet1.Tables[0].Rows[i][j].ToString();
cmd.Parameters.AddWithValue("val" + j, paramset[j]);
}
cmd.CommandText = "Insert into faqimport
cmd.Connection=con;
cmd.CommandType = CommandType.Text;
int x=cmd.ExecuteNonQuery;
}
When I try to run the above code I am getting 'Unknown column 'val0' in 'field list'' error.I understand that i am manually creating the parameters val0,val1,val2.....instead I am creating them dynamically using the integer 'j'.But I do not want to create around 50 parameters to insert data into the database table.
Also is there a way i can get the column datatypes from the excel sheet in order to create a new table in mysql with the columns in the excel sheet?
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Jan 22, 2010
I have a datalist control that is querying a accessdatasource for information that populates the results based on w/e is typed in a textbox. I can't figure out how to pass the information that is populated in the datalist to another page when a button is clicked (inside the datalist item template).
I was able to peform this in Detailsview with a hyperlink using the following arguments:
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Mar 16, 2011
How to get a dropdown list to use my own query, because i couldnt figure out how to use my variables in asp.net's configuration.
how i can get the dropdown list to read the data returned from my query?
protected void
Page_Load(object sender,
EventArgs e)
{
[Code]....
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Jun 3, 2010
I am pulling data from an excel file but the column Amount doesn't want to format to currency. i think it's my SQL statement but I am not sure.
[Code]....
I can take out the where the SQL statement begins "ALTER TABLE [Sheet1$] ALTER COLUMN Amount CURRENCY" and it works fine but I need the Amount column to be in currency format.
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Oct 15, 2010
I am having troubles making the code run. I have a web page with a gridview and a checkbox. I would like the button when selected to pass the category id. I have managed to get it work without paging. Once the paging kicks in see below, I am unable to run the code. see below.
In the design: ASPX
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL]">
<html xmlns="[URL]">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
BorderStyle="Solid" CellPadding="4" DataKeyNames="Categoryid"
BorderColor="Silver" BorderWidth="1px" Width="300px"
DataSourceID="SqlDataSource1" AllowPaging="True" PageSize="3" OnPageIndexChanging="GridView1_PageIndexChanging">
<Columns>
<asp:BoundField DataField="Categoryid" HeaderText="Categoryid"
InsertVisible="False" ReadOnly="True" SortExpression="Categoryid" />
<asp:BoundField DataField="Category" HeaderText="Category"
SortExpression="Category" />
<asp:TemplateField HeaderText="Categories" HeaderStyle-HorizontalAlign="Left">
<ItemTemplate>
<asp:CheckBox ID="chk1" runat="server"
Text='1' />
</ItemTemplate>
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
</asp:TemplateField>
<asp:TemplateField HeaderText="Hidden" HeaderStyle-HorizontalAlign="Left">
<ItemTemplate>
<asp:HiddenField ID="hiddenCatIDs" runat="server" />
</ItemTemplate>
<HeaderStyle HorizontalAlign="Left"></HeaderStyle>
</asp:TemplateField>
</Columns> <HeaderStyle HorizontalAlign="Left" BackColor="#f0f0f0" />
<PagerSettings PageButtonCount="3" />
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [Categoryid], [Category] FROM [Category]">
</asp:SqlDataSource>
</div>
<asp:Button ID="Button1" runat="server" Text="Button" />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
<div>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</div>
</form>
</body>
</html>
In the ASPX.VB
[Code]....
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Jul 12, 2010
I am using the datanavigateurlformatstring within a datagrid property with the property set something like;
editrecords2.aspx?RID={0}&SID={1}&LID={2}&DIP={3}&IID={4}&TID{5}
Unfortunately, when the new webpage opens, the url contains lots of spaces and I'm struggling to remove all of the spaces. The code actually works but looks a bit messy, see below.
"http://localhost:34354/website1/editrecords2.aspx?rid=2&sid=2& dip=5 & iid=3 &tid=3"
but should look like this
"http://localhost:34354/website1/editrecords2.aspx?rid=2&sid=2&dip=5& iid=3&tid=3"
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Feb 12, 2010
I have the following ItemTemplate in Repeater1
[code]....
How do I insert the value of ListID into the query string?
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Feb 26, 2010
I'm using the DetailView control to display employee details from a specfic company, but it seems when I try to create the query in the data source wizard I'm unable to select the variable for the WHERE clause, only the web pages control components.
The employees are selected through the company name which is entered at the beginning of the page and in turn is used to select the company id.
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Jun 3, 2010
How do I do this? I want to search my database in listview form with the text from a textbox or an item from a drop down list which is on another page.
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Jan 25, 2010
I am writing what i will call a survey system. The surveys will consist of a series of questions, split into sections. The survey definitions will be stored in a database. The questions can be of various types, that have different input methods and validation (e.g.textbox, numeric textbox, selectlist etc.) I am creating a set of user controls that map to different question types. I would like to completely abstract the survey rendering logic from the, survey definition logic. The way i thought i would do this is to use a dumb rendering control that simply takes a collection of controls and renders them out in a for each loop a super simplified version of what I am doing.
private void RenderControls()
{
foreach (UserControl CurrentControl in this.ControlsToRender)
{
MyPlaceholder.Controls.Add(CurrentControl)
}
}
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If i do something like this
private void RenderControls()
{
foreach (UserControl CurrentControl in this.ControlsToRender)
{
MyPlaceholder.Controls.Add(this.LoadControl("path to ascx file")
}
}
It will create the correct number of controls, but i don't want to instantiate the controls here because i would need to to set various properties based on cconditional logic i want to abstract away from this pure rendering layer.
what i want to do is instantiate the controls else where, set the relevant properties and then simply pass a collection of these into the rendering control to render out.
Is there a way to do this with user controls? Would i have to create custom controls instead?
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Nov 9, 2010
I have a SQL Server 2000 table that has an insert trigger that e-mails the user when a record is inserted for them. i want to include a link to a page that will disply a list (datagrid) of their records only. What is the best way to do this? The trigger is already completed and currently includes a link that displays all records but I want to be able to narrow that based on the user.
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Jul 11, 2010
Function RenderTips(ByRef passTipName As String, ByRef passYear As String, ByRef passTipNumber As String) As String
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Aug 11, 2010
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Aug 20, 2010
I have a query string with huge params (greater than 2 KB) and i have to pass it to another page in which there is an email component. I have to send the email with a link (URL) that has the query string so that user can click on the link and access the page.
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Oct 5, 2010
VS2010/VB/ASP.NET 4.0 If an error occurs in an ASP app you can redirect it to a default page which is defined in the web.config file How can you pass the variables (URL) to the error webpage then to a logfile or sent via an e-mail address?
Example: 404 Error
- Page hosting the link
- URL
- Search (if applicable)
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Apr 29, 2010
I have an asp:hyperlink that links to an iframe. I have set the navigateUrl to the iframe page would also like to pass a variable through to the iframe depending on what button is clicked.
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Sep 16, 2010
I am designing a page for my students to practice their Latin vocabulary. I am having two problems with the design: 1) working with checkboxes, and 2) display one returned row at a time. 1) First, students select from CheckListBox1 those parts of speech (nouns, verbs, adjectives, etc.) they want to review, and then they click Button1 ("Submit"), which fires off a SELECT statement against a table named CoreVocab in a SQLEXPRESS database. How do I pass each selected part of speech from CheckListBox1 as a variable into the WHERE statement when the user clicks Button1? Do I place this code in the Button1_Click on the .cs page?
2) the table returns the first row and Button1 changes to "Next," which the student then clicks to see the next Latin word. How do I get the Repeater table to show only one row at time until the Next button is clicked? And how do I get the same button to executed two functions (fire off the SELECT statement and then show the next row)? For what it's worth, I'm using the SqlDataReader command, since data will only be retrieved, not modified.
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Jan 19, 2010
I'm passing several variables thru the URL and want to use them in several SQL Queries that I want in my asp page. For example one of the (hypotetichal) is client_id and i want to use it in a query to gather other information.
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Apr 8, 2010
[Code]....
Well I'm not familiar with SP's yet, and I can't find a single example of what I want to do. basically I want to retrieve the town & county where the customers id are equal (note there will only ever be 1 result)
I can't figure out how to address the results to be stored within the output variables.
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May 6, 2010
I have gotten alot of help lately on my project and think I only have one more issue that I can't think of how to do. What i'd like to do is pass a login name and password from a Login.asp page to all of my other pages. So for instance if I have a successful login, I am taken to the Home.asp page. But i'm not sure how I can pass the LoginID used from Login.asp to the Home page. Ideally i'd like to use this information in the SQL connection strings, and to customize the Home page to show orders assigned to certain people that are logged in.
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Oct 15, 2010
I'm trying to pass some variables from one page to another via the session state and then post those variables to labels on page 2. When I try to write the code for my labels on page2, I get an error of "Declaration expected"Here is my code from that page:
Partial Class Default2
Inherits System.Web.UI.Page
Dim firstname As String = CType(Session.Item("FirstName"), String)
[code]...
Am I missing a page_load event handler or what am I missing?
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Mar 11, 2010
I have a search page which generates a GridView of results based on the search terms entered by the user. One of the columns in GridView is called a DOI (Document Object Itentifier). This DOI is used to find academic papers through [URL] when a user enters a DOI string. What I would like to do is redirect the user to the relevant webpage when they have selected the DOI in the GridView, however, the url for this page is always different. In the page, I have formatted the form tag like so: [URL] and in my GridView, I have formatted the row that I wish to have hyperlinked like so:
<asp:ButtonField DataTextField="DOI" HeaderText="DOI" CommandName="d"/>
Then, in my C# codebehind, I have the following event which aims to redirect the user to the required page, based on the tag they have selected:
switch (e.CommandName)
{
case "d":
searchResult.Attributes.Add("onchange", "window.open [URL]
break;
}
I don't think this code above makes any difference though as the form tag is already specifying the redirected url, nor do I think this task can be done with a html <table> object, as it only accepts static data, rather than a result set generated from a database, which is what I'm doing. I have also looked at the following post as a guide to this type of problem but, taking account of what it said didn't allow me to solve this problem completely. GridView with DDL and selected value
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Mar 25, 2011
I am trying to pass multiple variables between pages....
Page1.aspx (sending page)
Dim StrValue1 As String
Dim StrValue2 As String
StrValue1='ASSIGN A VALUE......
This does not work correctly. Page2.aspx is recieveing Value1 correctly but not Value2. I dont think I have the correct syntax...
Have tried the redirect with an ampersand in the middle but that does not work either...
Response.Redirect("Page2.aspx?Value1=" & Value1 & "&?Value2=" & Value2)
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Sep 3, 2010
I'm having problem on passing parameter on odbc because it's not working at all. I tried this using sql and I have no problem at all. All are working fine. Is there a different syntax on odbc? Here's my code:
[Code]....
Or using mysql connector/net to use mysql. I'm having problem installing it because the visual studio integration is not working, so I can't find it on the data source provider.
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