Hi all,
I triying to INSERT, DELETE and UPDATE data using ASP.net So far I am be able to connect to mySQL database, display data, insert data, update data but no delete records. Here is my code. SQLBindParameter error is displayed when I try to delete a record. Can anyone help me? What could be wrong?
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">;
<script runat="server">
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
SqlDataSource1.Insert()
End Sub
</script>
<html xmlns="
http://www.w3.org/1999/xhtml"; >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:MySqlConnection %>"
ProviderName="<%$ ConnectionStrings:MySqlConnection.ProviderName %>"
SelectCommand="SELECT mytable.* FROM mytable"
DeleteCommand="DELETE FROM mytable WHERE id = ?"
UpdateCommand="UPDATE mytable SET name = ?, age = ? WHERE id = ?"
InsertCommand="INSERT INTO mytable(name, age) VALUES (?, ?)"
OldValuesParameterFormatString="{0}"
>
<UpdateParameters>
<asp:Parameter Name="name" Type="String" />
<asp:Parameter Name="age" Type="Int32" />
</UpdateParameters>
<InsertParameters>
<asp:FormParameter Name="name" Type="String" FormField="TBname" />
<asp:FormParameter Name="age" Type="String" FormField="TBage" />
</InsertParameters>
<DeleteParameters>
<asp:Parameter Name="id" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1">
<Columns>
<asp:TemplateField ShowHeader="False">
<EditItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="True"
CommandName="Update" Text="Update"></asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False"
CommandName="Cancel" Text="Cancel"></asp:LinkButton>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False"
CommandName="Edit" Text="Edit">
</asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" CausesValidation="False"
CommandName="Delete" Text="Delete"
OnClientClick= "return confirm('r u sure?');">
</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="id" HeaderText="id" InsertVisible="False"
SortExpression="id" />
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:BoundField DataField="age" HeaderText="age" SortExpression="age" />
</Columns>
</asp:GridView>
<p>
<asp:TextBox ID="TBname" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
</p>
<p>
<asp:TextBox ID="TBage" runat="server"></asp:TextBox>
</p>
</form>
</body>
</html>