Monday, March 12, 2012

how to correctly build a formview dynamically/programmatically/code behind (did i do this

What i've written worksCool(it does what it's being asked to do) but i was wondering if this is the correct way to programmatically bind and alter the formview
Reason: We have various needs that will need to be achieved like, various SQL statements, variables & rules... so i was needing more control over what the wizard provides...

So i was wondering if this way is the "Best practice" and etc..

**Also i gotta figure out how to keep it form inserting a row on "refresh button" & I couldn't get itemUpdated to work?Confused

For brevity of code I'll post the ItemTemplate, which is replaced by EditItemTemplate or InsertItemTemplate with <%#Bind()%> on the Textboxes if necessary.

<asp:LabelID="lblError"runat="server"></asp:Label><br/>

<br/>

<asp:FormViewID="FormView1"runat="server"OnModeChanging="FormView1_ModeChanging"OnItemUpdating="FormView1_ItemUpdating"DataKeyNames="RowID"OnItemInserting="FormView1_ItemInserting">

<ItemTemplate>
<tablestyle="width: 338px; height: 264px">

<tr>
<tdstyle="width: 100px">Employee Id :</td>|
<tdstyle="width: 100px"><asp:LabelID="Label1"runat="server"Text='<%# Eval("RowID") %>'></asp:Label></td>
</tr>

<tr>
<tdstyle="width: 100px">First Name:</td>
<tdstyle="width: 100px"><asp:LabelID="Label2"runat="server"Text='<%# Eval("FirstName") %>'></asp:Label></td>
</tr>

<tr>
<tdstyle="width: 100px">Last Name:</td>
<tdstyle="width: 100px"><asp:LabelID="Label6"runat="server"Text='<%# Eval("LastName") %>'></asp:Label></td>
</tr>

<tr>
<tdstyle="width: 100px">Title:</td>
<tdstyle="width: 100px"><asp:LabelID="Label3"runat="server"Text='<%# Eval("Title") %>'></asp:Label></td>
</tr>

<tr>
<tdstyle="width: 100px">Phone #:</td>
<tdstyle="width: 100px"><asp:LabelID="Label4"runat="server"Text='<%# Eval("PhoneNumber") %>'></asp:Label></td>
</tr>

<tr>
<tdstyle="width: 100px">Notes</td>
<tdstyle="width: 100px"><asp:LabelID="Label5"runat="server"Height="85px"Text='<%# Eval("Notes") %>'Width="216px"></asp:Label></td>
</tr>

</table>

//These values change based on the template (Update CommandName="Update" ) or (Insert CommandName="Insert")
<asp:LinkButtonID="editButton"runat="server"CommandName="Edit">Edit</asp:LinkButton>|<asp:LinkButtonID="createButton"runat="server"CommandName="New">Create New</asp:LinkButton><br/>

<br/>

</ItemTemplate>

Code behind:

1public partialclass _Default : System.Web.UI.Page2{3//global variables45int myRowID;678protected void Page_Load(object sender, EventArgs e)9 {10//COMING IN FRESH START AT 1 ELSE USE WHATEVER VALUE myRowID is passed1112if (myRowID ==0)13 {14 myRowID = 1001;15 }1617if (!Page.IsPostBack)18 {19 BindData();20 }2122 }2324//BIND DATA25protected void BindData()26 {27//Create Connection28string strConnectionString = ConfigurationManager.ConnectionStrings["pubsConnectionString"].ConnectionString;29 SqlConnection myConnection =new SqlConnection(strConnectionString);3031//Create the Command32string strCommandText ="SELECT * FROM [Fishbowl] WHERE ([RowID] = '"+myRowID+"')";33 SqlCommand myCommand =new SqlCommand(strCommandText, myConnection);3435//open the connection36 myConnection.Open();3738 FormView1.DataSource = myCommand.ExecuteReader();39 FormView1.DataBind();4041//Close Connection42 myConnection.Close();4344 }454647CREATE A NEW KEY/ROWID48public int getLastID()49 {50//Create Connection51string strConnectionString = ConfigurationManager.ConnectionStrings["pubsConnectionString"].ConnectionString;52 SqlConnection myConnection =new SqlConnection(strConnectionString);5354//Create the Command55string strCommandText ="SELECT max(RowID) FROM [Fishbowl] ";56 SqlCommand myCommand =new SqlCommand(strCommandText, myConnection);5758//open the database connection59 myConnection.Open();6061//convert the value into something we can use62int lastID = (int)myCommand.ExecuteScalar()+1;6364//close the connection65 myConnection.Close();66return lastID;67 }686970//SWITCH THE FORMVIEW MODES71protected void FormView1_ModeChanging(object sender, FormViewModeEventArgs e)72 {73switch (e.NewMode)74 {75case FormViewMode.Edit:76 FormView1.ChangeMode(FormViewMode.Edit);77break;78case FormViewMode.Insert:79 FormView1.ChangeMode(FormViewMode.Insert);80break;81default:82 FormView1.ChangeMode(FormViewMode.ReadOnly);83break;84 }85 BindData();86 }8788//UPDATE THE CONTENT89protected void FormView1_ItemUpdating(object sender, FormViewUpdateEventArgs e)90 {91//Create Connection92string strConnectionString = ConfigurationManager.ConnectionStrings["pubsConnectionString"].ConnectionString;93 SqlConnection myConnection =new SqlConnection(strConnectionString);9495try96 {97//Query to execute98string strQuery ="UPDATE [Fishbowl] SET [FirstName] = @dotnet.itags.org.FirstName, [LastName] = @dotnet.itags.org.LastName, [Title] = @dotnet.itags.org.Title, [PhoneNumber] = @dotnet.itags.org.PhoneNumber, [Notes] = @dotnet.itags.org.Notes WHERE [RowID] = @dotnet.itags.org.RowID";99100//Create the Command101 SqlCommand myCommand =new SqlCommand(strQuery, myConnection);102103// FormViewRow row = FormView1.Row;104 //Set up parameters105 TextBox txtFirstName = (TextBox)FormView1.FindControl("txtFirstName");106 TextBox txtLastName = (TextBox)FormView1.FindControl("txtLastName");107 TextBox txtTitle = (TextBox)FormView1.FindControl("txtTitle");108 TextBox txtPhoneNumber = (TextBox)FormView1.FindControl("txtPhoneNumber");109 TextBox txtNotes = (TextBox)FormView1.FindControl("txtNotes");110111 myCommand.Parameters.AddWithValue("@dotnet.itags.org.FirstName", txtFirstName.Text );112 myCommand.Parameters.AddWithValue("@dotnet.itags.org.LastName", txtLastName.Text);113 myCommand.Parameters.AddWithValue("@dotnet.itags.org.Title", txtTitle.Text);114 myCommand.Parameters.AddWithValue("@dotnet.itags.org.PhoneNumber", txtPhoneNumber.Text);115 myCommand.Parameters.AddWithValue("@dotnet.itags.org.Notes", txtNotes.Text);116 myCommand.Parameters.AddWithValue("@dotnet.itags.org.RowID", myRowID);117118//open the database connection119 myConnection.Open();120 myCommand.ExecuteNonQuery();121122 }123catch (Exception ex)124 {125//Houston We have problems126127 lblError.Text = ex.Message;128 }129finally130 {131//close the database connection132 myConnection.Close();133 }134135 FormView1.ChangeMode(FormViewMode.ReadOnly);136 BindData();137 }138139//i guess if we can get this work, then we can validate the updated row140141void FormView1_ItemUpdated(object sender, FormViewUpdatedEventArgs e)142 {143// for some strange reason this won't fire.. really don't know why144 }145146//Insert ROW147148149protected void FormView1_ItemInserting(object sender, FormViewInsertEventArgs e)150 {151152//Create Connection153string strConnectionString = ConfigurationManager.ConnectionStrings["pubsConnectionString"].ConnectionString;154 SqlConnection myConnection =new SqlConnection(strConnectionString);155156try157 {158//Query to execute159string strQuery ="INSERT [Fishbowl] ([FirstName], [LastName], [Title], [PhoneNumber] , [Notes], [RowID]) VALUES ( @dotnet.itags.org.FirstName, @dotnet.itags.org.LastName,@dotnet.itags.org.Title, @dotnet.itags.org.PhoneNumber, @dotnet.itags.org.Notes, @dotnet.itags.org.RowID)";160161//Create the Command162 SqlCommand myCommand =new SqlCommand(strQuery, myConnection);163164//Set up parameters165 TextBox txtFirstName = (TextBox)FormView1.FindControl("txtFirstName");166 TextBox txtLastName = (TextBox)FormView1.FindControl("txtLastName");167 TextBox txtTitle = (TextBox)FormView1.FindControl("txtTitle");168 TextBox txtPhoneNumber = (TextBox)FormView1.FindControl("txtPhoneNumber");169 TextBox txtNotes = (TextBox)FormView1.FindControl("txtNotes");170171 myCommand.Parameters.AddWithValue("@dotnet.itags.org.FirstName", txtFirstName.Text);172 myCommand.Parameters.AddWithValue("@dotnet.itags.org.LastName", txtLastName.Text);173 myCommand.Parameters.AddWithValue("@dotnet.itags.org.Title", txtTitle.Text);174 myCommand.Parameters.AddWithValue("@dotnet.itags.org.PhoneNumber", txtPhoneNumber.Text);175 myCommand.Parameters.AddWithValue("@dotnet.itags.org.Notes", txtNotes.Text);176 myCommand.Parameters.AddWithValue("@dotnet.itags.org.RowID", getLastID());177178//open the database connection179 myConnection.Open();180 myCommand.ExecuteNonQuery();181182 }183catch (Exception ex)184 {185//Houston We have problems186 lblError.Text = ex.Message;187 }188finally189 {190//close the database connection191 myConnection.Close();192 }193194 FormView1.ChangeMode(FormViewMode.ReadOnly);195 myRowID = getLastID() - 1;196 BindData();197 lblError.Text ="Row Added";198 }199}200201

any help suggestions will be greatly appriecated thx in adv

well maybe this is a way to do it... so I'll go with this way until something breaks


another way is just to hi-jack the sqlDataSource Commands in the code behind..

if (condition 1) {

SqlDataSource1.SelectCommand ="SELECT * FROM [Fishbowl] WHERE ([RowID] = '"+myRowID+"')";

}else{

//condition2

SqlDataSource1.SelectCommand ="SELECT * FROM [Fishbowl] WHERE ([RowID] = '"+myRowID+"')";

}

Duh!!!!

This way i'll total control over what i want to query :)

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How to copy the content of a textbox with a button click?

Hi, i use Visual Web Developer 2005 express with Visual Basic and asp.net. I have a formView with a textbox and a button, i want to be able to copy the content of the textbox clicking on the button to paste the content in somewhere else.

Any one can help me with the code?

<asp:FormView ID="FormView1" runat="server" CellPadding="4" DataSourceID="SqlDataSource1"
ForeColor="#333333" GridLines="Both">
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#999999" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<ItemTemplate>
<table style="width: 561px; height: 85px" border="1" bordercolor="gainsboro">
<tr>
<td style="width: 156px; text-align: left;">
<asp:Label ID="Label3" runat="server" Font-Bold="True" Font-Names="Arial" Font-Size="Small"
Text="Test:"></asp:Label></td>
<td style="width: 302px">
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("ed_order_number", "{0}") %>'
Width="250px"></asp:TextBox></td>
<td style="width: 54px; text-align: center;">
<asp:Button ID="Button1" runat="server" Text="Copy" OnClick="Button1_Click" /></td>
</tr>

</table>
</ItemTemplate>
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderTemplate>
<table style="width: 401px; height: 67px">
<tr>
<td colspan="3" rowspan="3" style="height: 34px">
<asp:Label ID="Label37" runat="server" Font-Bold="True" Font-Names="Arial" Font-Size="Medium"
Text="Order Details"></asp:Label></td>
</tr>
<tr>
</tr>
<tr>
</tr>
</table>
</HeaderTemplate>
</asp:FormView>

Are you looking for something like this?

protected void Button1_Click(object sender, EventArgs e){TextBox TextBox1 = FormView1.FindControl("TextBox1")as TextBox;if (TextBox1 ==null) {return; }string value = TextBox1.Text;// Do what you want with value here}

I need to simulate the Ctrl + C function on the button to copy the content of the textbox, and after paste it in somewhere else.


bonfa:

Hi, i use Visual Web Developer 2005 express with Visual Basic and asp.net. I have a formView with a textbox and a button, i want to be able to copy the content of the textbox clicking on the button to paste the content in somewhere else.

Any one can help me with the code?

Hi there,

Have a look at this forum with a working examplehttp://forums.asp.net/t/1047507.aspx


I use Visual basic not C Sharp.


The code is all Javascript thoughWink

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