Web Forms :: Saving DataTable Rows In SQL Table
Dec 11, 2011I have a DataTable for which i do not know how many rows are there in it.. How to get the rows/columns one by one and save it in the desired SQL Table?
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What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
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[Code]....
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Code:
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Table
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[Code]....
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[Code]....
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[Code]....
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View 1 RepliesForms Data Controls :: Loop Through Different Sets Of Rows In A Datatable?
Oct 13, 2010I have a following scenario - A use selects criterias from a webform (C#) - a result is then returned from the sql. Say, to start, there are 2000 data returned from the sql and are stored in a dataset.
Now, the user wants to choose a number of drops (up to 6) - with the number of drops selected, they can enter their own quantity in each box. So, they can divide the 2000 records into 6 different drops. With each drop, there is campaigncode created based on the mail date and the job number they provide.
So, now i have the 2000 records in a dataset. What i want to do is loop through the gridview where the user fill out the quantity depending on the number of drops (for ex: if they say 3 drops, then there will be 3 rows in gridview with 3 quantity box to fill).
In the loop, I am getting the quantity, dropdate and the job number. The Campaigncode is created as well. Then, i am looping through the datarow in the dataset; updating the Campaign Code column with the CampaignCode for the number of records thats set in a loop. It works but the Campaign Code is not populated for the next set of records.
Here is the code:
[Code]....
I think its this line right here thats causing the problem. But i don't know how to tweak this so as to accomplish what i want to do.
if (Convert.IsDBNull(DSAEFile.Tables[0].Rows[i]["Campaign Code"]))
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Apr 13, 2010I am trying to delete row(s) from the DataTable conditionally but I cant.
Actually I have DataList with CheckBox (default value checked=false). I am bindind DataList at run time using DataView (Dataview is created fromDataTable).
I also have <asp:Button ID="btnDelete" ....> which I am using to delete checked items in the DataList (But this functionality is not working).
The user first "checked" items in the DataList and click the the button "btnDelete". Here nothing is being deleted (?) and the DataList appears with all the items"unchecked" (even those which the the "checked" by the user). protected void btnDelete_Click(object sender, EventArgs e) . In this function I am checking state of the checkbox before deleting the row in the DataTable.
On PostBack generated by the "btnDelete", DataList appears with checkboxes unchecked therefore nothing is being deleted
Here is the DataList
[Code]....
Following is the .cs file
[Code]....
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[Code]....
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An example is below.
trHead1 = New TableRow
trHead2 = New TableRow
tcCalc = New TableCell
tcCalc.Text = "Rates"
trHead1.Cells.Add(tcCalc)
trHead2.Cells.Add(tcCalc)
As soon as I make the second row add the cell, the cell disappears from the first row. This really doesn't make sense to me but that seems to be the way it is. If there is a work around other than duplicating the lines;
tcCalc = New TableCell
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I have a basic one cell asp:table on the page called "Table1" and then I append this table by using the Controls.Add(TableBuilder()) function in the Page_Init().
How the code basically works:
Public Function TableBuilder() As Table
dim r = New System.Web.UI.WebControls.TableRow()
Dim c = New System.Web.UI.WebControls.TableCell()
a = New TextBox
a.ID = "Sunday"
c.Controls.Add(a)
r.Cells.Add(c)
Table1.Rows.Add(r)
TableBuilder = Table1
The table shows up fine but after I press the save button I look for the created control to get the value the user entered it says the control is not there.
SaveButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim txtSunday As TextBox = Master.FindControl("MainContent").FindControl(("Sunday"))
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But if I call TableBuilder() at the start of the function the control is found but the value the user entered is gone.
SaveButton_Click()
TableBuilder()
Dim txtSunday As TextBox = Master.FindControl("MainContent").FindControl(("Sunday"))
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May 22, 2010So I've been teaching myself ASP.NET and VB for about 3 weeks now, having trouble with datatables, not sure how to get the rows to line up like I think they should. My code:
[Code]....
Which gives me the data output I want, but the days are adding rows underneath the previous day instead of lining up side-by-side. The idea is that once it's working I'll replace the specific dates with calendar controls. The gridview currently outputs like this:
Web Forms :: Converting Table To XML Format Then Saving It Silently As File?
Mar 8, 2011Here's what I have in my ASPX file:
<form id="form1" runat="server">
<table border="1" width="100%">
<tr><td>Firstname</td><td>Lastname</td></tr>
<tr><td><%=Request.Querystring("fname")%></td></tr>
</table>
</form>
Here's what I have in my aspx.vb file:
Imports System.IO
Partial Public Class MyexcelPage
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Response.Clear()
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Response.ContentType = "application/vnd.ms-excel"
Dim stringWriter As StringWriter = New StringWriter()
Dim htmlTextWriter As HtmlTextWriter = New HtmlTextWriter(stringWriter)
Me.RenderControl(htmlTextWriter)
Not sure what to do after this or if the above will do anything.
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[Code]....
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Nov 22, 2010I'm trying to update fields in a DataTable. The field I'm trying to edit is a date, I need to format it.
foreach (DataRow row in dt.Rows)
{
string originalRow = row["Departure Date"].ToString(); //displays "01/01/2010 12:00:00 AM"
row["Departure Date"] = DateTime.Parse(row["Departure Date"].ToString()).ToString("MM/dd/yyyy");
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How come this isn't getting updated?
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Jul 6, 2010I have a datatable with the ordering of its DataClassIndex column before editting:
DataclassIndex 0 1 2 3 4
When I start modifying some other cells in this datatable, the ordering of DataClassIndex column changes to something like this
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How can I modify a datatable content without altering the original order of the datatable.
