为什么此DropDownList不在此GridView中更新? [英] Why this DropDownList is not updating inside this GridView?
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问题描述
我具有以下数据库设计:
I have the following database design:
Employee Table: Username, Name, JobTitle, BadgeNo, IsActive, DivisionCode
Divisions Table: SapCode, DivisionShortcut
我有一个GridView，我正在用它来添加，删除和更新/编辑员工信息.此信息是员工用户名，名称，徽章编号，JobTitle，IsActive和DivisionShortcut.这些分区将在DropDownList中列出.我编写了代码，但出现以下错误:
*
>无效的列名称"DivisionShortcut".
*
ASP.NET代码:
And I have a GridView that I am using it to add, delete and update/edit the employees information. This information is employee Username, Name, BadgeNo, JobTitle, IsActive and the DivisionShortcut. The Divisions will be listed in DropDownList. I wrote the code but I got the following error:
*
> Invalid column name ''DivisionShortcut''.
*
ASP.NET Code:
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="Username"
DataSourceID="SqlDataSource1" BorderWidth="1px" BackColor="#DEBA84"
CellPadding="3" CellSpacing="2" BorderStyle="None"
BorderColor="#DEBA84" OnRowEditing="GridView1_RowEditing"
OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowUpdating="GridView1_RowUpdating">
<FooterStyle ForeColor="#8C4510"
BackColor="#F7DFB5"></FooterStyle>
<PagerStyle ForeColor="#8C4510"
HorizontalAlign="Center"></PagerStyle>
<HeaderStyle ForeColor="White" Font-Bold="True"
BackColor="#A55129"></HeaderStyle>
<Columns>
<asp:CommandField ButtonType="Button" ShowEditButton="true" ShowCancelButton="true" />
<asp:TemplateField HeaderText="Division">
<ItemTemplate>
<%# Eval("DivisionShortcut")%>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="DivisionsList" runat="server" DataSourceID="DivisionsListDataSource"
DataTextField="DivisionShortcut" DataValueField="SapCode"></asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Username" HeaderText="Network ID" ReadOnly="True"
SortExpression="Username" />
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<%# Eval("Name")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployeeName" runat="server" Text=''<%# Bind("Name")%>'' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Job Title">
<ItemTemplate>
<%# Eval("JobTitle")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtJobTitle" runat="server" Text=''<%# Bind("JobTitle")%>'' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Badge No.">
<ItemTemplate>
<%# Eval("BadgeNo")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtBadgeNo" runat="server" Text=''<%# Bind("BadgeNo")%>'' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Is Active?">
<ItemTemplate>
<%# Eval("IsActive")%>
</ItemTemplate>
<EditItemTemplate>
<asp:CheckBox ID="isActive" runat="server"
Checked=''<%# Eval("IsActive").ToString().Equals("True") %>''/>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Delete?">
<ItemTemplate>
<span önclick="return confirm(''Are you sure to Delete the record?'')">
<asp:LinkButton ID="lnkB" runat="Server" Text="Delete" CommandName="Delete"></asp:LinkButton>
</span>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:UsersInfoDBConnectionString %>"
SelectCommand="SELECT dbo.Divisions.DivisionShortcut, dbo.employee.Username, dbo.employee.Name, dbo.employee.JobTitle, dbo.employee.BadgeNo, dbo.employee.IsActive
FROM dbo.Divisions INNER JOIN
dbo.employee ON dbo.Divisions.SapCode = dbo.employee.DivisionCode"
UpdateCommand="UPDATE [employee], [Divisions] SET [Name] = @Name, [JobTitle] = @JobTitle,
[BadgeNo] = @BadgeNo, [DivisionShortcut] = @division WHERE [Username] = @Username"
DeleteCommand="DELETE FROM [employee] WHERE [Username] = @Username">
<UpdateParameters>
<asp:Parameter Name="Name" Type="String" />
<asp:Parameter Name="JobTitle" Type="String" />
<asp:Parameter Name="BadgeNo" Type="String" />
<asp:Parameter Name="DivisionShortcut" Type="String" />
<asp:Parameter Name="Username" Type="String" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="Username" Type="String" />
</DeleteParameters>
</asp:SqlDataSource>
我忘了提到DropDownList有一个SqlDataSource.
I forgot to mention that there is a SqlDataSource for the DropDownList.
<asp:SqlDataSource ID="DivisionsListDataSource" runat="server"
ConnectionString="<%$ ConnectionStrings:UsersInfoDBConnectionString %>"
SelectCommand="SELECT * FROM Divisions">
</asp:SqlDataSource>
更新:
后台代码:
UPDATE:
Code-Behind:
//For editing any row in the GridView
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
}
//For updating the information in any row in the GridView
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow gvrow = GridView1.Rows[e.RowIndex];
DropDownList DivisionsList = (DropDownList)gvrow.FindControl("DivisionsList");
TextBox txtEmployeeName = (TextBox)gvrow.FindControl("txtEmployeeName");
TextBox txtJobTitle = (TextBox)gvrow.FindControl("txtJobTitle");
TextBox txtBadgeNo = (TextBox)gvrow.FindControl("txtBadgeNo");
CheckBox isActive = (CheckBox)gvrow.FindControl("isActive");
//For getting the ID (primary key) of that row
string username = GridView1.DataKeys[e.RowIndex].Value.ToString();
string name = txtEmployeeName.Text;
string jobTitle = txtJobTitle.Text;
string badgeNo = txtBadgeNo.Text;
string division = DivisionsList.SelectedValue.ToString();
UpdateEmployeeInfo(username, name, jobTitle, badgeNo, division);
}
private void UpdateEmployeeInfo(string username, string name, string jobTitle, string badgeNo, string division)
{
string connString = ConfigurationManager.ConnectionStrings["UsersInfoDBConnectionString"].ConnectionString;
SqlConnection conn = new SqlConnection(connString);
string update = @"UPDATE Employee SET Name = @Name, JobTitle = @JobTitle,
BadgeNo = @BadgeNo, DivisionShortcut = @division
WHERE Username = @Username";
SqlCommand cmd = new SqlCommand(update, conn);
cmd.Parameters.AddWithValue("@Name", name);
cmd.Parameters.AddWithValue("@JobTitle", jobTitle);
cmd.Parameters.AddWithValue("@BadgeNo", badgeNo);
cmd.Parameters.AddWithValue("@division", division);
cmd.Parameters.AddWithValue("@Username", username);
//cmd.Parameters.AddWithValue("@IsActive", isActive.checked);
try
{
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
GridView1.EditIndex = -1;
// SqlDataSource1.UpdateCommand = @"UPDATE Employee SET Name = @Name, JobTitle = @JobTitle,
// BadgeNo = @BadgeNo
// WHERE Username = @Username";
// SqlDataSource1.Update();
}
catch (Exception ex)
{
throw ex;
}
finally
{
cmd.Dispose();
conn.Close();
conn.Dispose();
}
GridView1.DataBind();
}
错误是:
System.Data.SqlClient.SqlException:无效的列名称"DivisionShortcut".
这是通过UpdateEmployeeInfo()
And the error is:
System.Data.SqlClient.SqlException: Invalid column name ''DivisionShortcut''.
which is fired in the Catch block from the UpdateEmployeeInfo()
推荐答案
ConnectionStrings:UsersInfoDBConnectionString％>在Catch块中触发的" SelectCommand ="SELECT dbo.Divisions.DivisionShortcut，dbo.employee.Username，dbo.employee.Name，dbo.employee.JobTitle，dbo.employee.BadgeNo，dbo.employee.IsActive 来自dbo.Divisions内部联接 dbo.employee ON dbo.Divisions.SapCode = dbo.employee.DivisionCode UpdateCommand ="UPDATE [员工]，[部门] SET [名称] = @名称，[JobTitle] = @JobTitle， [BadgeNo] = @BadgeNo，[DivisionShortcut] = @division WHERE [Username] = @Username DeleteCommand ="DELETE FROM [employee] WHERE [Username] = @Username"> < UpdateParameters> < asp:参数名称=名称"类型=字符串"/> < asp:参数名称="JobTitle" Type ="String"/> < asp:参数名称="BadgeNo"类型="String"/> < asp:参数名称="DivisionShortcut"类型="String"/> < asp:参数名称=用户名"类型=字符串"/> </UpdateParameters> < DeleteParameters> < asp:参数名称=用户名"类型=字符串"/> </DeleteParameters> </asp:SqlDataSource>
ConnectionStrings:UsersInfoDBConnectionString %>" SelectCommand="SELECT dbo.Divisions.DivisionShortcut, dbo.employee.Username, dbo.employee.Name, dbo.employee.JobTitle, dbo.employee.BadgeNo, dbo.employee.IsActive FROM dbo.Divisions INNER JOIN dbo.employee ON dbo.Divisions.SapCode = dbo.employee.DivisionCode" UpdateCommand="UPDATE [employee], [Divisions] SET [Name] = @Name, [JobTitle] = @JobTitle, [BadgeNo] = @BadgeNo, [DivisionShortcut] = @division WHERE [Username] = @Username" DeleteCommand="DELETE FROM [employee] WHERE [Username] = @Username"> <UpdateParameters> <asp:Parameter Name="Name" Type="String" /> <asp:Parameter Name="JobTitle" Type="String" /> <asp:Parameter Name="BadgeNo" Type="String" /> <asp:Parameter Name="DivisionShortcut" Type="String" /> <asp:Parameter Name="Username" Type="String" /> </UpdateParameters> <DeleteParameters> <asp:Parameter Name="Username" Type="String" /> </DeleteParameters> </asp:SqlDataSource>
我忘了提到DropDownList有一个SqlDataSource.
I forgot to mention that there is a SqlDataSource for the DropDownList.
<asp:SqlDataSource ID="DivisionsListDataSource" runat="server"
ConnectionString="<%
ConnectionStrings:UsersInfoDBConnectionString％>" SelectCommand = " > </asp:SqlDataSource>
ConnectionStrings:UsersInfoDBConnectionString %>" SelectCommand="SELECT * FROM Divisions"> </asp:SqlDataSource>
更新:
后台代码:
UPDATE:
Code-Behind:
//For editing any row in the GridView
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
}
//For updating the information in any row in the GridView
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
GridViewRow gvrow = GridView1.Rows[e.RowIndex];
DropDownList DivisionsList = (DropDownList)gvrow.FindControl("DivisionsList");
TextBox txtEmployeeName = (TextBox)gvrow.FindControl("txtEmployeeName");
TextBox txtJobTitle = (TextBox)gvrow.FindControl("txtJobTitle");
TextBox txtBadgeNo = (TextBox)gvrow.FindControl("txtBadgeNo");
CheckBox isActive = (CheckBox)gvrow.FindControl("isActive");
//For getting the ID (primary key) of that row
string username = GridView1.DataKeys[e.RowIndex].Value.ToString();
string name = txtEmployeeName.Text;
string jobTitle = txtJobTitle.Text;
string badgeNo = txtBadgeNo.Text;
string division = DivisionsList.SelectedValue.ToString();
UpdateEmployeeInfo(username, name, jobTitle, badgeNo, division);
}
private void UpdateEmployeeInfo(string username, string name, string jobTitle, string badgeNo, string division)
{
string connString = ConfigurationManager.ConnectionStrings["UsersInfoDBConnectionString"].ConnectionString;
SqlConnection conn = new SqlConnection(connString);
string update = @"UPDATE Employee SET Name = @Name, JobTitle = @JobTitle,
BadgeNo = @BadgeNo, DivisionShortcut = @division
WHERE Username = @Username";
SqlCommand cmd = new SqlCommand(update, conn);
cmd.Parameters.AddWithValue("@Name", name);
cmd.Parameters.AddWithValue("@JobTitle", jobTitle);
cmd.Parameters.AddWithValue("@BadgeNo", badgeNo);
cmd.Parameters.AddWithValue("@division", division);
cmd.Parameters.AddWithValue("@Username", username);
//cmd.Parameters.AddWithValue("@IsActive", isActive.checked);
try
{
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
GridView1.EditIndex = -1;
// SqlDataSource1.UpdateCommand = @"UPDATE Employee SET Name = @Name, JobTitle = @JobTitle,
// BadgeNo = @BadgeNo
// WHERE Username = @Username";
// SqlDataSource1.Update();
}
catch (Exception ex)
{
throw ex;
}
finally
{
cmd.Dispose();
conn.Close();
conn.Dispose();
}
GridView1.DataBind();
}
错误是:
System.Data.SqlClient.SqlException:无效的列名称"DivisionShortcut".
这是从UpdateEmployeeInfo()的Catch块中触发的.
And the error is:
System.Data.SqlClient.SqlException: Invalid column name ''DivisionShortcut''.
which is fired in the Catch block from the UpdateEmployeeInfo()
您已经添加了
You have added
<asp:parameter name="DivisionShortcut" type="String" xmlns:asp="#unknown" />
在更新参数中.
将其更改为divison，因为您使用的是@division参数.
in update parameter.
Change it to divison because you are using @division parameter.
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