Forms Data Controls :: DatagridView Postback / Cannot Make The Datagridview's Buttonfield Respond?
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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Dec 29, 2010
i have this column in a datagridview on aspx page
<asp:TemplateField HeaderText="Observacion">
<ItemTemplate>
<asp:Label ID="lblOrderID" runat="server" Text='<%# Eval("Observacion") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Width="200px" Wrap="False" />
</asp:TemplateField>
I have set up the itemstyle with and wrap to false, but anyways the width columns grows the the data is too long. i just want to change the height of the column not the width. Here us the complete code of the datagridview
<asp:GridView ID="GridView1" runat="server" AutoGenerateDeleteButton="True" CellPadding="4" EnableModelValidation="True" ForeColor="#333333" GridLines="None" AutoGenerateColumns="False">
<columns>
<asp:boundfield datafield="ID_OBSERVACION" visible="False" />
<asp:boundfield datafield="AUTOR" headertext="Autor" />
<asp:boundfield datafield="FECHA" headertext="Fecha" />
<asp:TemplateField HeaderText="Observacion">
<ItemTemplate>
<asp:Label ID="lblOrderID" runat="server" Text='<%# Eval("Observacion") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Width="200px" Wrap="False" />
</asp:TemplateField>
</columns>
<AlternatingRowStyle BackColor="White" ForeColor="#284775" Wrap="False" />
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" Wrap="False" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
</asp:GridView>
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May 8, 2010
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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
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protected
void Button1_Click(object sender,
EventArgs e)
{
Response.Clear();
Response.Buffer = true ;
Response.AddHeader("content-disposition" ,
"attachment;filename=text.xls" );
Response.Charset = "" ;
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ;
StringWriter sw =
new StringWriter ();
HtmlTextWriter hw =
new HtmlTextWriter (sw);
GridView1.DataSource = RecordsDataSet;
GridView1.DataBind();
GridView1.AllowPaging = false ;
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);
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Feb 3, 2010
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[Code]....
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Mar 29, 2010
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[Code]....
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Feb 15, 2011
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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,
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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
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Jan 6, 2011
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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
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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
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protected void Imgbtn_delete_Click(object sender, ImageClickEventArgs e)
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Nov 12, 2010
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Mar 6, 2011
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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.
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DataTable dt = new DataTable();
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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
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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.
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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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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 1, 2011
I have a column in datagridview which is display the vendor services. It is a textbox type when display. However, when I want to edit the service. I would like to click on the cell, and the cell change to combobox for me to choose. How can I do that?
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Jun 10, 2010
I want to allow people visiting my website to have the ability to change the displayed data in a DataGridView from a Dropdown box and have it auto postback. So options are in the dropdown box 10, 20, 30
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