C# CommandArgument中返回null
myC# CommandArgument中返回null,c#,asp.net,gridview,commandargument,C#,Asp.net,Gridview,Commandargument,myCommandArgument中没有数据返回,my.cs中没有行命令代码 这是我的.cs代码 if(e.CommandName == "ApproveRow") { int index = Convert.ToInt32(e.CommandArgument); //int index; //bool check = int.TryParse(e.CommandName.ToString(), out index); GridViewRow row = Gr
CommandArgument
中没有数据返回,my.cs中没有行命令代码
这是我的.cs代码
if(e.CommandName == "ApproveRow")
{
int index = Convert.ToInt32(e.CommandArgument);
//int index;
//bool check = int.TryParse(e.CommandName.ToString(), out index);
GridViewRow row = GridView1.Rows[index];
string ids = row.Cells[2].Text;
Utility u = new Utility();
string conn = u.connect();
SqlConnection connUser = new SqlConnection(conn);
SqlCommand read = connUser.CreateCommand();
string update = "UPDATE MosefTransaction SET TransStatus = 'Approved' where TransactionID = '" + ids + "'";
connUser.Open();
read.CommandText = update;
//read.Parameters.AddWithValue("@TransactionID", ids);
read.Parameters.Clear();
read.ExecuteNonQuery();
}
这是我的aspx代码:
<asp:TemplateField HeaderText="Transaction Number" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblmosID" runat="server" Text='<%#Bind ("TransactionID") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Width="30px" Font-Size="15px" Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Date" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblDate" runat="server" Text='<%#Bind ("DateFiled") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Width="130px" Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Name" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblName" runat="server" Text='<%#Bind ("ReqName") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Company" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblComp" runat="server" Text='<%#Bind ("ReqCompany") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Branch" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblBranch" runat="server" Text='<%#Bind ("ReqBranch") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names ="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Business Unit" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblBU" runat="server" Text='<%#Bind ("ReqBU") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Department" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblDept" runat="server" Text='<%#Bind ("ReqDept") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Section" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblsection" runat="server" Text='<%#Bind ("ReqSection") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names="Calibri" />
</asp:TemplateField>
<asp:TemplateField HeaderText="Status" HeaderStyle-ForeColor="White">
<ItemTemplate>
<asp:Label ID ="lblStatus" runat="server" Text='<%#Bind ("TransStatus") %>'></asp:Label>
</ItemTemplate>
<ItemStyle Font-Names="Calibri" />
</asp:TemplateField>
<asp:ButtonField ButtonType="Button" CommandName="ApproveRow" HeaderText="Approve" Text="Approve" ControlStyle-CssClass="btn btn-primary" HeaderStyle-ForeColor="White" HeaderStyle-Font-Names="Calibri" ItemStyle-Font-Names="Calibri"/>
我的错误在哪里?我尝试使用了
BoundField
,它可以正常工作,但我需要使用“批量批准绑定”复选框。谢谢 如果使用TemplateFields和real控件,则不能使用Cell.Text,因为它是“
”
您可以使用GridViewRow.FindControl
:
Label lblmosID = (Label) row.FindControl("lblmosID");
string ids = lblmosID.Text;
但您应该真正使用sql参数,而不是字符串串联:
string update = @"UPDATE MosefTransaction
SET TransStatus = 'Approved'
Where TransactionID = @TransactionID";
using(var updateCommand = new SqlCommand(update, connUser))
{
// presuming it's an int
updateCommand.Parameters.Add("@TransactionID", SqlDbType.Int).Value = int.Parse(lblmosID.Text);
connUser.Open();
int affected = updateCommand.ExecuteNonQuery();
}
如果使用TemplateFields和real控件,则不能使用Cell.Text,因为它是“
”
您可以使用GridViewRow.FindControl
:
Label lblmosID = (Label) row.FindControl("lblmosID");
string ids = lblmosID.Text;
但您应该真正使用sql参数,而不是字符串串联:
string update = @"UPDATE MosefTransaction
SET TransStatus = 'Approved'
Where TransactionID = @TransactionID";
using(var updateCommand = new SqlCommand(update, connUser))
{
// presuming it's an int
updateCommand.Parameters.Add("@TransactionID", SqlDbType.Int).Value = int.Parse(lblmosID.Text);
connUser.Open();
int affected = updateCommand.ExecuteNonQuery();
}
首先,不要将任何变量附加到命令
read.ExecuteNonQuery()强>
其次,ExecuteOnQuery只返回行数
请参见首先,您不向命令附加任何变量
read.ExecuteNonQuery()强>
其次,ExecuteOnQuery只返回行数
看