Forms Data Controls :: DataGridView Editing And Requried Field?
Nov 6, 2010
I am editing a DataGridView and i have a textbox on the same page.I have setup textbox as rerquired field.when i edit my grid view it shows 2 buttons, cancel and update.when i press update button it shows textbox must has a value, altough textbox is not the part of the grid but available on the same page.I want when i press any button on the page, it should show field is required but when i press update button of the grid it should bypass the required field validation.
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Feb 17, 2011
I am new to asp.net and was trying to use datagridview in my webform. I was able to bind it to my database but I cannot make the datagridview's buttonfield respond. It seems the grid's SelectedIndexChanged event is not being fired or has issues with postback. Even a very simple statement is not being executed by the program e.g.
protected void grid_SelectedIndexChanged(object sender, EventArgs e)
{
detailsLabel.Text = "asdfasdfsafasddf";
}
It seems the SelectedIndexChanged is not being fired. I have checked my IE and scripting is enabled.
I am using VS 2008 and IE7. Can anyone share a solution on how to solve this issue?
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Oct 23, 2010
Very new to VS2010
I've got data in a DetailsView control which shows the data and expands the rows to suit the content.
However, when I click to edit the information, the editing area changes to just a few characters wide.
How do I change the size of the editing area to match the view data state?
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Apr 7, 2010
I have loaded up a gridview object with data. I have turned on Edit on the grid. It lets me edit the data, but I also want to put some code to check for correct data in each field. I tried to assign a requiredfieldvalitor, comparevaliditor but they don't work. Is there an event I can capture to fire up some code before the grid sves my data?
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Feb 8, 2011
I hav a gridview in which i display the project name,created date,Start time ,end time ,total hours along with the task id field which is visible=false.
My starttime and endtime format is 2010-10-13 03:00:00,but i want to display these two fields in dropdownlist ie.,only i want to display the HH:MM:SS in dropdown so that when the user changes the time it should be automatically be reflected in the total hours(6:0) field after updating.pls tell me what i have to do to bring the Hours ,minutes and seconds in dropdownlist into the cells of gridview with the value in database ,how to write the code.
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May 8, 2010
I have a datagridview within which i want to use a dropdownlist.I am not sure how to do it.can anyone provide any links or hint how to do this?
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Feb 16, 2010
Trying to update a .NET .20 datagridview in the following scenario. A page contains a formview. The formview contains a datagridview and some other fields not in the grid. The formview has its own ObjectDataSource and the datagridview has a separate ObjectDataSource. Each ObjectDataSource has an OnUpdating event. Clicking a Save button triggers the formview update event and the "non-grid" ObjectDataSource updates without a problem. In that same event, I also want to update the grid's ObjectDataSource. Because it's a grid, this OnUpdating event has to loop through each row, get the data for that row and set the UpdateParameter values. A foreach loop can get the values, but how do I trigger the update before looping to the next row?
Should I try calling a different kind of event for the DataGridView's ObjectDataSource? Or is there a way to get all the grid's new data at once as a dataset or datatable and do one bulk update? The datagridview does not have row-level edit/update buttons. It is meant to be an all-or-nothing kind of update.
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Feb 2, 2011
I am trying to export an ASP.NET 3.5 DataGridView to Excel using the following code :
protected
void Button1_Click(object sender,
EventArgs e)
{
Response.Clear();
Response.Buffer = true ;
Response.AddHeader("content-disposition" ,
"attachment;filename=text.xls" );
Response.Charset = "" ;
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new StringWriter ();
HtmlTextWriter hw =
new HtmlTextWriter (sw);
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GridView1.DataBind();
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GridView1.DataBind();
GridView1.HeaderRow.Style.Add("background-color" ,
"#FFFFFF" );
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridViewRow row = GridView1.Rows[i];
//Change Color back to white
row.BackColor = System.Drawing.Color .White;
//Apply text style to each Row
row.Attributes.Add("class" ,
"textmode" );
}
GridView1.RenderControl(hw);
//style to format numbers to string...........
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Feb 3, 2010
I am trying to conditionally format a datagridview row. My gridview has only one row of data. Here is my code
[Code]....
My page gets an error saying "Specified Argument is out of range of valid values". Any ideas on what could be wrong?
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Mar 29, 2010
have this code for Thread. Put data in textBox.How input three variables in to dataGridView?
[Code]....
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Feb 15, 2011
I have calculated a value (say, Total) from datagrid values using RowDataBound event.
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Nov 2, 2010
I need to add 3 rows to a footer, i did a total but dont know how to add 2 more,
I have a variable credits that i would like to display on the next line and then net the 2 on the 3rd line.
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protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.Footer)
{
double totald = Convert.ToDouble(dt.Compute("Sum(Bal)", string.Empty).ToString());
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e.Row.Cells[0].Attributes.Add("align", "left");
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e.Row.Cells[2].Attributes.Add("align", "center");
e.Row.
}
}
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May 22, 2010
i have images stored in database and i have to show it in a web page thru datagridview
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Jan 6, 2011
i have table in my database that contain Fname and age for example.
i need to paint in green all age that under 50 and to paint in red all age up to 50
how to to it ?
i'am using asp.net C# on VS2008
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Aug 26, 2010
I have a situation where I need to freeze first two colums in a datagrid view control on my asp.net app. In windows forms there is a proprty called Freeze which can be enabled / disabled. How can I freeze first two colums in a data grid view control on my ASP.NET page.
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Mar 5, 2010
I added a checkbox column in the first column of datagridview.
Once data loaded to datagridview there are three columns will display: check (check box), ID, description
How to get value of ID when user checks the check box at that row?
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Apr 5, 2010
I am using C# , ASP .NET 2.0 and i have to avoid the datagrid view items from being wrapped.
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May 17, 2010
i am working on delete method... having problems in deleting the selected row in datagrid view..
protected void Imgbtn_delete_Click(object sender, ImageClickEventArgs e)
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Nov 12, 2010
I have spent most of my time writing ASP.Net web pages, using VS 2005. I am now developing some client function for Windows, so I'm relatively less expert in VB.In my Windows program I have defined a DataGridView and linked this to a data table (within a tableadaptor). Now I want to populate it: on a web page's code-behind I would write Gridview.databind(). What is the equivalent with a DataGridView.
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Mar 6, 2011
how i add DropDownList in edit mode of DataGridView by DataSet through code not visible?
As we know that by default Every Column in Edit mode is a TextBox I want to replace this to DropDownList through code.
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Nov 1, 2010
I'm new to asp.net. I have an exercise about datagridview.
Basically it's like this, I created a sql database in visual studio, added some tables and records. I added a gridview to my page and change the datasource to 1 of my tables. It displays every thing fine.
Now my exercise is, I need to add a new record to that table from a textbox control and button submit, and display in gridview after page reload.
DataTable dt = new DataTable();
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Apr 30, 2010
I have a web page with a Form a Button, a TextBox and a DataGridView in it. The DataGridView uses a SqlDataSource as its data source. SqlDataSource has one parameter which gets it's value from a
form parameter (TextBox1). When the page is opened for the first time I set the TextBox1 default value in code behind:
protected void Page_Load(object sender, EventArgs e)
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May 25, 2010
I have loaded data into gridview from datatable which is in database.
I need to select any row from gridview to fetch the selectedrow values and need to display in corresponding textboxes.
but selectedindexchanged event is not firing, do I need to do any extra settings?
I want to fecth select index from the data loaded from database table.( not from manullay adding data to datarow and assigning datarow to datable and fanally to gridview- this is not the case)
onselectedindexchanged="GridView1_SelectedIndexChanged"
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Sep 8, 2010
I am using a DataGridView and have a master table which contains values which different tables related to the master data, i.e. StatusID =1 in master table = TrailerStatus (1, 2, 3, 4 and their descriptions) are in a related table. I am able to retrieve the values from Table B 1 = Empty, 2 = Rejected, 3 = Onsite, etc. However, I don't know how to relate the master table StatusID = 1 to default my dropdown list from the relational table 1, 2, 3, 4.
I have been fighting with this for quite some time and just have not found a solid example of how to do this. I actually have two dropdownlists which will need to be correctly wired in order for my application to work.
This will also be an editable dataGridView but I will tackle that challenge once I get this first hair plucked from my butt.
There is some code-behind which doesn't work at all pertaining to a ;; gvSCACDetail_RowDataBound ;;
but I dont' think I can even get the code to compoile when this is not commented out.
Here are some of the details:
<td style="width: 700px; height: 20px">
<asp:GridView ID="gvSCACDetail" runat="server" AutoGenerateColumns="False" AutoGenerateEditButton="True" DataKeyNames="trailerid,locationid,scacid,statusid,capacityid" AutoGenerateDeleteButton="True" DataSourceID="SCACDetailView" Visible="False" Width="698px">
<PagerStyle CssClass="centerh" HorizontalAlign="Center" />
[Code]....
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Dec 10, 2010
I created a website with a datagridview and I would like to add documents per line, actually a inserted there the next option
<asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False"
ReadOnly="True" SortExpression="ID" />
<asp:BoundField DataField="Week" HeaderText="Week" [code]....
it works really good, the only question is that how can I load the file with the button of "update", from the datagridview, how this code should be written?
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