How To Get Datatable From Gridview

Feb 23, 2011

how to get datatable from gridview?

somthing like this:

DataTable dt = gridview1.DataSource as DataTable;

I don't want to save data in session before grid binding.



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C# - How To Join Two Datatable Datas Into One Datatable To Show In One Gridview

May 24, 2010

how to join two datatable datas into one datatable to show in one gridview

i.e in 1 datatable i have username and pwd and in another datatable i have that user details. how to show all these in one datatable to get those values display in gridview(asp.net)

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Error "DataTable Is An Ambiguous Reference Between System.Data.DataTable And Microsoft.Office.Interop.Word.DataTable"

Jan 20, 2011

'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'

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C# - Binding DataTable To GridView, But No Rows In GridViewRowCollection Despite GridView Population?

Jun 2, 2010

I've coded a GridView in the markup in a page. I have coded a DataTable in the code-behind that takes data from a collection of custom objects. I then bind that DataTable to the GridView. (Specific problem mentioned a couple code-snippets below.)

GridView Markup:

<asp:GridView ID="gvCart" runat="server" CssClass="pList" AutoGenerateColumns="false" DataKeyNames="ProductID">
<Columns>
[code]....

Goal: I'm basically trying to find a way to update the data in my GridView (and more importantly my cart Session object) without having to do everything else I've seen online such as utilizing OnRowUpdate, etc. Could someone please tell me why gvCart.Rows is empty and/or how I could accomplish my goal without utilizing OnRowUpdate, etc.? When I execute this code, the GridView gets populated but for some reason I can't access any of its rows in the code-behind.

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Databinding Gridview To Datatable?

Feb 18, 2011

basically I had a repeater that i needed to be able to now update row by row. I thought the easiest way would be to replace with a datagrid.

Here is the code:

Code:

[code]....

If I take away the select filtering, I then get this error on rowdatabound

Unable to cast object of type 'System.Data.DataRowView' to type 'System.Data.DataRow'.

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C# - Gridview Checkbox Value To DataTable

Apr 14, 2010

First off, im using a checkbox to highlight a true or false value from a dataset which I want to be able to change it. Unfortunately databinding the DataTable to the GridView checkboxes doesnt work (as you probably know) as it requires it to be in "edit" mode.

The way I've gotten round this is having the checkbox reading the data table value seperately rather than being databound and locked:

Checked='<%# Convert.ToBoolean(Eval("myValue")) %>'

So that solves checkbox values from DataTable -> GridView, now I need to do the opposite having the changed checkbox values go from GridView -> DataTable as it is not ready to submit it to my data source (SQL) just yet.

I figure I need to run a loop through the GridView rows, thats a give'un, what I can't figure out is how to replace/update just a single value in a row of a DataTable , only the ability to add or remove an entire row by the looks of things (something I don't want to do).

So can anyone offer a workaround?
Or is there a way to have a databound but always editable checkbox in a gridview?

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Connecting DataTable And Gridview?

Jan 12, 2011

I have a set of productIDs in a DataTable.

I would like to display the relevant data about the specific productIDs in the DataTable in a DataList with the Product data being drawn another Database called Products.

How do I do this?

And how do I write the select statement in VB.net in the SqlDataSource of the Gridview?

I thought of a SELECT .. WHERE .. IN?

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How To Copy Gridview Datas To Datatable?

Feb 25, 2009

how to copy gridview datas to datatable

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C# - Way To Sort GridView Bound To DataTable

Jul 13, 2010

I have a repository that contains all of my LINQ queries for this project that I am working on. I am able to get the LINQ results to a DataTable and bind that to a gridview for displaying the data. Now I need to make the gridview sortable. I have set AllowSorting="true" and I have the OnSort event handled in a routine in the codebehind.

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Web Forms :: Binding DataTable To Gridview?

Nov 8, 2010

I am trying to add many rows in the gridview by clicking a Add button in web form by takeing the value from the textbox then add it to gridview but i couldn't because it accept one row only so how can I let the gridview accept more than one row in every click to the button.

[Code]....

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Sorting Gridview Bound To Datatable In C#.net?

Sep 28, 2010

I have a gridview which is bound to a DataTable. When I try to sort the gridview, it goes blank. How can I enable sorting this gridview? I know this question has been asked before, but what I'm looking for is an explanation of how to do it. Perhaps with a simple example.

I have read that I need to put some code in the on_sorting and/or on_sorted events, but I don't understand what needs to go there. Again, I want to understand the method of accomplishing this, I don't just want a giant block of code.

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C# - Bind The Converted Value From A Datatable To Gridview?

Apr 3, 2010

how to bind the value to gridview

i have a datatable

DataTable dtBindGrid = new DataTable();

dtBindGrid = serviceobj.SelectExamTimeTable(txtSchoolName.Text, txtBranchName.Text, txtClass.Text, txtExamName.Text);
foreach (DataRow row in dtBindGrid.Rows)
{

[Code]....

this datatable will return me some values like day,date,time,duration,subject,..

here im getting each value in string bec to convert the Time as 9.00am or 9.00pm

DatedTime = Convert.ToDateTime(row["Time"].ToString());
strgettime = DatedTime.ToString("t");

.... how to bind this converted value to my gridview.

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C# - RowFilter On A DataTable To Display In A Gridview?

Aug 10, 2010

I have the following code which doesn't seem to work. In the Page_Load function I populate the DataSet and display the results in a grid view.

newsCommand = new SqlCommand("SQL code here", dbConnection);
newsDataSet = new DataSet();
newsDataAdapter = new SqlDataAdapter(newsCommand);
newsDataAdapter.SelectCommand = newsCommand;
newsDataAdapter.Fill(newsDataSet, "Bulletins");

[Code]....

Yet the gridview shows the data it orignally loaded, and not the filtered data. The only thing I can think of is that I'm not using the DataTable in the Page_Load function.

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VS 2008 DetailsView And GridView Bound To A DataTable

Mar 2, 2011

I'm hacking my way through ASP.Net WebForms, coming from VB.Net WinForms. I was hoping the transition would've been more seamless... it is not.

I have a GridView (Paging enabled) bound to a DataTable, filled with Joined tables from an Access 2000 DataBase.

The GridView and DetailsView are bound to the same DataTable.

In the GridView's SelectedIndexChanged Event I have the following:

vb.net Code:

' dtvSelected is the DetailsView' dgvJobTOF is the GridView Me.dtvSelected.PageIndex = Me.dgvJobTOF.SelectedIndex

When the page loads the first item in the GridView is also displayed in the DetailsView.

I've added a "Select" button in the GridView and when it is clicked the Data in the DetailsView remains the same regardless of the selected GridView row.

DataBinding Method:

vb.net Code:

[code]....

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How To Convert GridView's Current Page Into DataTable

Aug 10, 2010

How to convert GridView's current page into DataTable?

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AJAX :: Use AutoComplete ComboBox In A DataTable And GridView

Nov 23, 2010

I am using an Active Directory DirectorySearcher to populate a DataTable and GridView so I can make a sort of "Phone List", very similar to the following post: [URL] What I also want to do is use a ComboBox with Append AutoComplete mode to easily filter this phonelist. However, what datasource am I supposed to bind the ComboBox to?

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C# - How To Set A Gridview Column Width When Binding To A Datatable

Apr 29, 2010

I am binding a table to a gridview in asp.net as such

grdIssues.DataSource = mdtIssues;
grdIssues.DataBind();

The problem is I cannot then control the column width, asp.net seems to decided on it's own what width each column should be. Methods such as

grdIssues.Columns[0].ItemStyle.Width = 100;
grdIssues.Columns[1].ItemStyle.Width = 100;

don't work because the columns are created dynamically. I cannot believe there isn't a way to do this short of manually creating each column and filling each row.

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C# - Setup Format For Columns Of DataTable Or GridView?

Apr 2, 2010

How can I setup some format for cells in some column in my DataTable or GridView ?I need to make some double columns rounded , for example :

3.564643 -> 3.56
3.546723 -> 3.55
6.654644 -> 6.65

DataFormatString ?where ?Question still active, I didn't solved the problem :-/

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Pass Datatable To The Mvc View Error / CS0246: The Type Or Namespace Name 'DataTable' Could Not Be Found

Sep 28, 2010

I was reading: [URL]

But I have give a compilation error:

CS0246: The type or namespace name 'DataTable' could not be found (are you missing a using directive or an assembly reference?

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DataSource Controls :: How To Copy The Data From One Datatable To Another Datatable Based On The Schema

Jan 11, 2010

i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.

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Forms Data Controls :: Set A Column In A DataTable To Be A Primary Key For An Existing Datatable

Apr 2, 2010

If I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?

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Binding A GridView Programmatically With Datatable Containing Html Tags?

Jan 9, 2011

let's say we have datatable with "<a>12</a>" as rows.when i try to bind it to gridview programmatically
I'm not getting href links like 12 But just a strings like "<a>12</a>"

Code:
Dim datatable as new DataTable
datatable.Columns.Add("No")
dim datarow1 ad DataRow = datatable.newrow()
datarow1(0) = "<a>12</a>"
datatable.rows.add(datarow1)
gridview1.DataSource = datatable
gridview1.DataBind()

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Forms Data Controls :: Deleting A Row From A DataTable And GridView

Dec 28, 2009

I have a gridview in BoundFiled there is a RowNumber which i am assigning from code behind. I have a add button which adds a new row to gridview. while adding I will +1 to RowNumber.

whenever I am adding a new row i will save the previous rows data through viewstate. I am saving data into a ViewState("CurrentTable"). I have linkbutton for removing in TemplateField. When ever I click on that link button it should delete the selected row and should save the remaning rows data. If I have 3 rows and I am trying to delete the 2nd row it is deleting from the Datatable. but I see the result as like, 1st row data will be fine.

[Code]....

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Forms Data Controls :: Deleting Row From DataTable Via GridView?

Feb 10, 2010

I've got a GridView that's databound to a DataTable that I have stored in Session. I want to be able to add a LinkButton into this gridview so I can delete rows from the DataTable, however, I need to reference the rows in the datatable somehow.

I figured the simplest was

[Code]....

but the problem is, I need to somehow cross-reference the particular row I want deleted.

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Forms Data Controls :: Sorting GridView And DataTable

Jul 6, 2010

I'm trying to sort GridView but I have problem with converting DataSource to DataTable. Object of DataTable is empty. I don't know how to convert it.Do you have any ideas? Here is my code:

private void SortGridView(string sortExpression, string direction)
{
DataTable dt = GridViewDzialania.DataSource as DataTable;
DataView dv = new DataView(dt);
dv.Sort = sortExpression + direction;
GridViewDzialania.DataSource = dv;
GridViewDzialania.DataBind();
}

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Changing The Order Of Columns When Binding DataTable To A GridView

Mar 31, 2010

How is it possible to change the displayed order of columns from a DataTable?

For example, dataTable "dt" contains two columns "a" and "b". I bind it to a GridView like this:

gridView.DataSource = dt;
gridView.DataBind();

But I'd like the GridView to display "b" first (leftmost).

Important point: I'm using this to export to Excel and there's no actual output to screen, using:

HtmlTextWriter htw = new HtmlTextWriter(sw);
gridView.RenderControl(htw);

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C# - How To Bind A DataTable With Complex Data Objects To A GridView

Jan 31, 2011

My DataTable is programatically generated, and contains objects of type JobInstance in the cells.

[Code]....

When I bind this DataTable to an ASP GridView, it only displays the first column. But if I remove the "typeof(Job)" when creating the column (the line with // !!!), the GridView displays all the columns by showing the result of JobInstance.ToString() in the cells. However, I have no access to the underlying JobInstance object, only the string values that are being displayed.

I need access to the JobInstance object when displaying the GridView (for example in the OnRowDataBound), because I want to access the fields inside JobInstance for each cell to determine formatting options, and add other links in each cell.

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Forms Data Controls :: Delete Row From Gridview Using Datatable

Aug 19, 2010

iam insert data through gridview using datable, and i have 2button , insert and delete button , i wants to delete a row from the gridview using delete button below the code i constructed for insert, how to delete the row.

protected void Button2_Click(object sender, EventArgs e)
{
//delete button
} [code].....

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Forms Data Controls :: Datatable In A Gridview Control?

Dec 10, 2010

I am creating a data table dynamically which has 10 rows and binding that table to Gridview. In Gridview, I am having 4 dropdownlist, 5 textbox and 1 label controls .

here i want to give clientside validations using javascript for textbox but I am unable to find the textbox control of a gridview using javascript.

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Forms Data Controls :: Bind GridView URL From Datatable?

Jul 21, 2010

I have a data table, in one of the column, I will have this data, I will bind the data table to a grid view. I was hoping that this column change to a hyperlink. But, it was display the entire text.

<A HREF="page_url">Remark(s)</A>

When I view the page source code, I saw this:

<A HREF="page_url;Remark(s)</A>

How to correct this?

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