了解Gridview行命令
本文关键字：命令 Gridview 了解 | 更新日期: 2023-09-27 18:16:39
我已经编写了一个gridview，当我单击编辑按钮时不会触发，我发现了一个较旧的问题，通过在RowCommand方法下使用e.p commandname和if语句来解决我的问题。我试图找出如何实现它与我的代码。
我的问题是，我如何使用e.RowIndex在更新期间找到我的控件和引用那些现在?此外，我已经尝试调用我的旧更新方法，但它不会让我使用sender和e作为参数，因为GridviewCommandEventArgs不同于GridViewEventUpdateArgs。我很困惑，如果你能帮我解决这个问题，我将不胜感激。
c#:void RowCommand(Object sender, GridViewCommandEventArgs e)
{
// If multiple buttons are used in a GridView control, use the
// CommandName property to determine which button was clicked.
if (e.CommandName == "Edit")
{
}
if (e.CommandName == "Update")
{
UpdateCustomer(sender, e);
string nFirstName = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtFirstName")).Text;
string nLastName = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtLastName")).Text;
string nEmergency = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtEmergency")).Text;
string nCell = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtCell")).Text;
string nAge = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtAge")).Text;
string nActivityCard = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtActivityCard")).Text;
string nBoat = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtBoat")).Text;
string nInitials = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtInitials")).Text;
string nGroup = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("txtGroup")).Text;
SqlConnection con = new SqlConnection(strConnString);
SqlCommand cmd = new SqlCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "update Person set FirstName=@FirstName, LastName=@LastName, " +
"Emergency#=@Emergency, Cell#=@Cell, Age=@Age, ActivityCard=@ActivityCard, Initials=@Initials, CraftType=@Boat, Group#=@Group " +
"where Person.PersonID=@Pid;" +
"SELECT Person.PersonID, Person.FirstName AS FirstName, Person.LastName AS LastName, Person.Emergency# AS Emergency#, Person.Cell# AS Cell#, Person.Age AS Age, " +
"Person.ActivityCard AS ActivityCard, Person.CraftType AS CraftType, Person.Initials AS Initials, Person.Group# AS Group# " +
"FROM Person INNER JOIN " +
"TripSchedule ON Person.PersonID = TripSchedule.PersonID where TripSchedule.Date = @Date and " +
"TripSchedule.Time = @Time and TripSchedule.TripType = @Type order by Person.Group#;";
cmd.Parameters.Add("@FirstName", SqlDbType.VarChar).Value = nFirstName;
cmd.Parameters.Add("@LastName", SqlDbType.VarChar).Value = nLastName;
cmd.Parameters.Add("@Emergency", SqlDbType.NChar).Value = nEmergency;
cmd.Parameters.Add("@Cell", SqlDbType.NChar).Value = nCell;
cmd.Parameters.Add("@Age", SqlDbType.NChar).Value = nAge;
cmd.Parameters.Add("@ActivityCard", SqlDbType.NChar).Value = nActivityCard;
cmd.Parameters.Add("@Initials", SqlDbType.NChar).Value = nInitials;
cmd.Parameters.Add("@Boat", SqlDbType.VarChar).Value = nBoat;
cmd.Parameters.Add("@Group", SqlDbType.VarChar).Value = nGroup;
cmd.Parameters.AddWithValue("@Date", TextBox1.Text);
cmd.Parameters.AddWithValue("@Time", ddlTripTime.SelectedItem.ToString());
cmd.Parameters.AddWithValue("@Type", ddlTripType.SelectedItem.ToString());
long personID = long.Parse(GridView1.DataKeys[e.RowIndex].Values["PersonID"].ToString());
cmd.Parameters.AddWithValue("@Pid", personID);
GridView1.EditIndex = -1;
GridView1.DataSource = GetData(cmd);
GridView1.DataBind();
}
if (e.CommandName == "Cancel")
{
}
}
ASP。净:
<div id="dvGrid" style="padding: 0px">
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:GridView ID="GridView1" DataKeyNames="PersonID" runat="server" AutoGenerateColumns="False"
Font-Names="Arial" Font-Size="10pt" AlternatingRowStyle-BackColor="blue" HeaderStyle-BackColor="aqua"
ShowFooter="true" OnRowEditing="EditCustomer" OnRowUpdating="UpdateCustomer"
OnRowCancelingEdit="CancelEdit" ShowHeaderWhenEmpty="true" Height="95px">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<%# Container.DataItemIndex + 1 %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="First Name">
<ItemTemplate>
<asp:Label ID="lblFirstName" runat="server" Height="20px" Text='<%# Eval("FirstName")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtFirstName" runat="server" Text='<%# Eval("FirstName")%>'></asp:TextBox>
</EditItemTemplate>
<ItemStyle Width = "60px" />
<FooterTemplate>
<asp:TextBox ID="txtFirstName" width="60px" MaxLength="15" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Last Name">
<ItemTemplate>
<asp:Label ID="lblLastName" runat="server" Text='<%# Eval("LastName")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtLastName" runat="server" Text='<%#Bind("LastName")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtLastName" width="60px" MaxLength="15" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Age">
<ItemTemplate>
<asp:Label ID="lblAge" runat="server" Text='<%# Eval("Age")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtAge" runat="server" Text='<%# Eval("Age")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtAge" Width="30px" MaxLength="2" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Activity Card">
<ItemTemplate>
<asp:Label ID="lblActivityCard" runat="server" Text='<%# Eval("ActivityCard")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtActivityCard" runat="server" Text='<%# Eval("ActivityCard")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtActivityCard" Width="50px" MaxLength="7" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Cell Phone">
<ItemTemplate>
<asp:Label ID="lblCell" runat="server" Text='<%# Eval("Cell#")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtCell" runat="server" Text='<%# Eval("Cell#")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtCell" Width="70px" MaxLength="10" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Emergency Phone">
<ItemTemplate>
<asp:Label ID="lblEmergency" runat="server" Text='<%# Eval("Emergency#")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmergency" runat="server" Text='<%# Eval("Emergency#")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtEmergency" width="70px" MaxLength="10" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Boat Type">
<ItemTemplate>
<asp:Label ID="lblBoat" runat="server" Text='<%# Eval("CraftType")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtBoat" runat="server" Text='<%# Eval("CraftType")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtBoat" Width="80px" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Initials">
<ItemTemplate>
<asp:Label ID="lblInitials" runat="server" Text='<%# Eval("Initials")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtInitials" runat="server" Text='<%# Eval("Initials")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtInitials" width="30px" MaxLength="2" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Group #">
<ItemTemplate>
<asp:Label ID="lblGroup" runat="server" Text='<%# Eval("Group#")%>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtGroup" runat="server" Text='<%# Eval("Group#")%>'></asp:TextBox>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtGroup" MaxLength="2" Width="20px" runat="server"></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="lnkRemove" runat="server" CommandArgument='<%# Eval("PersonID")%>'
OnClientClick="return confirm('Are you sure you want to delete?')" Text="Delete"
OnClick="DeleteCustomer"></asp:LinkButton>
</ItemTemplate>
<FooterTemplate>
<asp:Button ID="btnAdd" runat="server" Text="Submit" OnClick="AddNewCustomer" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="">
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="Edit">Edit</asp:LinkButton>
</ItemTemplate>
<EditItemTemplate>
<asp:LinkButton ID="lnkUpdate" runat="server" CommandName="Update">Update</asp:LinkButton>
<asp:LinkButton ID="lnkCancel" runat="server" CommandName="Cancel">Cancel</asp:LinkButton>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
您可以将RowIndex作为您的LinkButtons的CommandArgument。
<EditItemTemplate>
<asp:LinkButton ID="lnkUpdate" runat="server" CommandName="Update" CommandArgument='<%# Container.DataItemIndex %>'>Update</asp:LinkButton>
<asp:LinkButton ID="lnkCancel" runat="server" CommandName="Cancel" CommandArgument='<%# Container.DataItemIndex %>'>Cancel</asp:LinkButton>
</EditItemTemplate>
可以从后面的代码访问。使用rowindex，您可以获得当前行并使用FindControl
void RowCommand(Object sender, GridViewCommandEventArgs e)
{
int rowindex = Convert.ToInt32(e.CommandArgument);
if (e.CommandName == "Update")
{
....
}
if (e.CommandName == "Cancel")
{
....
}
}
e.CommandArgument将包含所单击行的索引，因此您可以通过
int index = Convert.ToInt32(e.CommandArgument);
GridView1.Rows[index].Controls[x];