您好我最终确定使用内部联接表中的下拉列表创建gridview添加，编辑和更新。编辑中的一切工作正在将下拉列表恢复为其第一个值，我希望当用户按下编辑以显示附加值的名称时 提前致谢 那是我的代码：
<asp:TemplateField >
<ItemStyle Width="143px" />
<HeaderStyle Width="143px" />
<HeaderTemplate >
<asp:Label ID="Label4" runat="server" Text="Customer Name"></asp:Label><br /><br /><br />
<asp:DropDownList ID="fddlCName" Width="145px" DataSourceID="SqlDataSource5" DataTextField="Customer_Name"
DataValueField="C_ID" SelectedValue='<%# Bind("C_ID") %>'
Runat="server" AppendDataBoundItems="True"><asp:ListItem Value="-1">---Select Customer---</asp:ListItem></asp:DropDownList>
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblCName" runat="server" Text='<%#Eval("Customer_Name")%>'> </asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="eddlCName" DataSourceID="SqlDataSource5" Width="145px" DataTextField="Customer_Name"
DataValueField="C_ID" runat="server" >
</asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField >
<ItemStyle Width="140px" />
<HeaderStyle Width="140px" />
<HeaderTemplate>
<asp:Label ID="Label5" runat="server" Text="Product"></asp:Label><br /><br /><br />
<asp:DropDownList ID="fddlMmodel" DataSourceID="SqlDataSource4" Width="138px" DataTextField="Machine_Model"
DataValueField="Product_ID" SelectedValue='<%# Bind("Product_ID") %>' AppendDataBoundItems="True"
Runat="server"><asp:ListItem Value="-1">---Select Product---</asp:ListItem></asp:DropDownList>
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblMmodel" runat="server" Text='<%#Eval("Machine_Model")%>'> </asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="eddlMmodel" DataSourceID="SqlDataSource4" DataTextField="Machine_Model"
DataValueField="Product_ID" Width="138px" Runat="server"></asp:DropDownList>
</EditItemTemplate>
<FooterTemplate>
</FooterTemplate>
</asp:TemplateField>
<asp:SqlDataSource ID="SqlDataSource3" runat="server" ConnectionString="<%$ ConnectionStrings:CobornSalesDBConnectionString %>"
SelectCommand="SELECT distinct Status_ID, Status FROM STATUSES"></asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource4" runat="server" ConnectionString="<%$ ConnectionStrings:CobornSalesDBConnectionString %>"
SelectCommand="SELECT distinct Product_ID, Machine_Model FROM PRODUCTS "></asp:SqlDataSource>
我的代码背后为gridview
的内连接if (!IsPostBack)
{
userSales();
}
}
private static DataTable GetData(string query)
{
string strConnString = ConfigurationManager.ConnectionStrings["CobornSalesDBConnectionString"].ConnectionString;
using (SqlConnection con = new SqlConnection(strConnString))
{
using (SqlCommand cmd = new SqlCommand())
{
cmd.CommandText = query;
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataSet ds = new DataSet())
{
DataTable dt = new DataTable();
sda.Fill(dt);
return dt;
}
}
}
}
}
public void userSales()
{
string Agent_ID = Session["Agent_ID"].ToString();
con.Open();
if (Session["Agent_ID"] != null)
{
SqlCommand cmd = new SqlCommand("SELECT SalesActivity.A_ID,SalesActivity.Date, SalesActivity.Quatation_Number,CUSTOMER.Agent_ID, CUSTOMER.Customer_Name, PRODUCTS.Machine_Model, SalesActivity.Quantity,
SalesActivity.valueGBR, SalesActivity.valueEUR, SalesActivity.weightedValue, STATUSES.Status, SalesActivity.estDecisionDate, SalesActivity.PromisedDeliveryDate FROM [SalesActivity]
INNER JOIN [CUSTOMER] ON SalesActivity.C_ID = CUSTOMER.C_ID INNER JOIN [PRODUCTS] ON SalesActivity.Product_ID = PRODUCTS.Product_ID INNER JOIN STATUSES ON SalesActivity.Status_ID = STATUSES.Status_ID
where CUSTOMER.Agent_ID = @Agent_ID", con);
cmd.Parameters.AddWithValue("@Agent_ID", Agent_ID);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
con.Close();
if (ds.Tables[0].Rows.Count > 0)
{
GridView1.DataSource = ds;
GridView1.DataBind();
}
else
{
ds.Tables[0].Rows.Add(ds.Tables[0].NewRow()); // if record not found then returning a blank table structure
GridView1.DataSource = ds;
GridView1.DataBind();
int columncount = GridView1.Rows[0].Cells.Count;
GridView1.Rows[0].Cells.Clear();
GridView1.Rows[0].Cells.Add(new TableCell());
GridView1.Rows[0].Cells[0].ColumnSpan = columncount;
GridView1.Rows[0].Cells[0].Text = "No Records Found";
}
}
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex; //this open new index that is edit mode
userSales();
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1; //after cancel button want go to one index back that's y -1
userSales();
}
protected void OnSelectedIndexChanged(object sender, EventArgs e)
{
TextBox ftxtvalueGBR = (TextBox)GridView1.HeaderRow.FindControl("ftxtvalueGBR");
DropDownList fddlStatus = GridView1.HeaderRow.FindControl("fddlStatus") as DropDownList;
TextBox ftxtweightedValue = (TextBox)GridView1.HeaderRow.FindControl("ftxtweightedValue");
double weightedValue=0;
double contractValue = Convert.ToDouble(ftxtvalueGBR.Text);
if (fddlStatus.SelectedValue == "S00001")
{
weightedValue = 0;
}
else if (fddlStatus.SelectedValue == "S00002")
{
weightedValue = ((contractValue * 0.25));
}
else if (fddlStatus.SelectedValue == "S00003")
{
weightedValue = ((contractValue * 0.50));
}
else if (fddlStatus.SelectedValue == "S00004")
{
weightedValue = (contractValue);
}
else if (fddlStatus.SelectedValue == "S00005")
{
weightedValue = 0;
}
ftxtweightedValue.Text = weightedValue.ToString();
}
protected void btnAdd_Click(object sender, EventArgs e)
{
string Agent_ID = Session["Agent_ID"].ToString();
TextBox ftxtDate = (TextBox)GridView1.HeaderRow.FindControl("ftxtDate");
TextBox ftxtQno = (TextBox)GridView1.HeaderRow.FindControl("ftxtQno");
DropDownList fddlCName = GridView1.HeaderRow.FindControl("fddlCName") as DropDownList;
DropDownList fddlMmodel = GridView1.HeaderRow.FindControl("fddlMmodel") as DropDownList;
TextBox ftxtQuantity = (TextBox)GridView1.HeaderRow.FindControl("ftxtQuantity");
TextBox ftxtvalueGBR = (TextBox)GridView1.HeaderRow.FindControl("ftxtvalueGBR");
TextBox ftxtvalueEUR = (TextBox)GridView1.HeaderRow.FindControl("ftxtvalueEUR");
TextBox ftxtweightedValue = (TextBox)GridView1.HeaderRow.FindControl("ftxtweightedValue");
DropDownList fddlStatus = GridView1.HeaderRow.FindControl("fddlStatus") as DropDownList;
TextBox ftxtestDecisionDate = (TextBox)GridView1.HeaderRow.FindControl("ftxtestDecisionDate");
TextBox ftxtPromisedDeliveryDate = (TextBox)GridView1.HeaderRow.FindControl("ftxtPromisedDeliveryDate");
con.Open();
SqlCommand cmd = new SqlCommand("INSERT INTO SalesActivity( Date, Quatation_Number, C_ID, Product_ID, Quantity, valueGBR, valueEUR, weightedValue, Status_ID, estDecisionDate, PromisedDeliveryDate) VALUES( @Date, @Quatation_Number, @C_ID, @Product_ID, @Quantity, @valueGBR, @valueEUR, @weightedValue, @Status_ID, @estDecisionDate, @PromisedDeliveryDate) ", con);
cmd.Parameters.AddWithValue("@Date", DateTime.Parse(ftxtDate.Text));
cmd.Parameters.AddWithValue("@Quatation_Number", ftxtQno.Text.Trim());
cmd.Parameters.AddWithValue("@C_ID", fddlCName.SelectedValue);
cmd.Parameters.AddWithValue("@Product_ID", fddlMmodel.SelectedValue);
cmd.Parameters.AddWithValue("@Quantity", ftxtQuantity.Text.Trim());
cmd.Parameters.AddWithValue("@Status_ID", fddlStatus.SelectedValue);
cmd.Parameters.AddWithValue("@estDecisionDate", DateTime.Parse(ftxtestDecisionDate.Text));
cmd.Parameters.AddWithValue("@PromisedDeliveryDate", DateTime.Parse(ftxtPromisedDeliveryDate.Text));
if (string.IsNullOrEmpty(ftxtvalueGBR.Text))
{ cmd.Parameters.Add(new SqlParameter("@valueGBR", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@valueGBR", ftxtvalueGBR.Text)); }
if (string.IsNullOrEmpty(ftxtvalueEUR.Text))
{ cmd.Parameters.Add(new SqlParameter("@valueEUR", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@valueEUR", ftxtvalueEUR.Text)); }
if (string.IsNullOrEmpty(ftxtweightedValue.Text))
{ cmd.Parameters.Add(new SqlParameter("@weightedValue", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@weightedValue", ftxtweightedValue.Text)); }
int result = cmd.ExecuteNonQuery();
con.Close();
if (result == 1)
{
userSales();
Response.Write("<script language=javascript>alert('" + ftxtQno.Text + "'+' Sale Details inserted successfully');</script>");
}
else
{
Response.Write("<script language=javascript>alert('" + ftxtQno.Text + "'+' Sale Details not inserted');</script>");
}
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
string Activity_ID = GridView1.DataKeys[e.RowIndex].Values["A_ID"].ToString();
TextBox etxtDate = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtDate");
TextBox etxtQno = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtQno");
DropDownList eddlCName = GridView1.Rows[e.RowIndex].FindControl("eddlCName") as DropDownList;
DropDownList eddlMmodel = GridView1.Rows[e.RowIndex].FindControl("eddlMmodel") as DropDownList;
TextBox etxtQuantity = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtQuantity");
TextBox etxtvalueGBR = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtvalueGBR");
TextBox etxtvalueEUR = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtvalueEUR");
TextBox etxtweightedValue = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtweightedValue");
DropDownList eddlStatus = GridView1.Rows[e.RowIndex].FindControl("eddlStatus") as DropDownList;
TextBox etxtestDecisionDate = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtestDecisionDate");
TextBox etxtPromisedDeliveryDate = (TextBox)GridView1.Rows[e.RowIndex].FindControl("etxtPromisedDeliveryDate");
con.Open();
SqlCommand cmd = new SqlCommand("update SalesActivity set Date=@Date,Quatation_Number=@Quatation_Number, C_ID = @C_ID, Product_ID = @Product_ID,Quantity = @Quantity, valueGBR = @valueGBR, valueEUR = @valueEUR, weightedValue = @weightedValue, Status_ID = @Status_ID,estDecisionDate = @estDecisionDate, PromisedDeliveryDate = @PromisedDeliveryDate where A_ID=@A_ID ", con);
cmd.Parameters.AddWithValue("@A_ID", Activity_ID);
cmd.Parameters.AddWithValue("@Date", DateTime.Parse(etxtDate.Text));
cmd.Parameters.AddWithValue("@Quatation_Number", etxtQno.Text.Trim());
cmd.Parameters.AddWithValue("@C_ID", eddlCName.SelectedValue);
cmd.Parameters.AddWithValue("@Product_ID", eddlMmodel.SelectedValue);
cmd.Parameters.AddWithValue("@Status_ID", eddlStatus.SelectedValue);
cmd.Parameters.AddWithValue("@estDecisionDate", DateTime.Parse(etxtestDecisionDate.Text));
cmd.Parameters.AddWithValue("@PromisedDeliveryDate", DateTime.Parse(etxtPromisedDeliveryDate.Text));
if (string.IsNullOrEmpty(etxtvalueGBR.Text))
{ cmd.Parameters.Add(new SqlParameter("@valueGBR", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@valueGBR", etxtvalueGBR.Text)); }
if (string.IsNullOrEmpty(etxtQuantity.Text))
{ cmd.Parameters.Add(new SqlParameter("@Quantity", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@Quantity", etxtQuantity.Text)); }
if (string.IsNullOrEmpty(etxtvalueEUR.Text))
{ cmd.Parameters.Add(new SqlParameter("@valueEUR", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@valueEUR", etxtvalueEUR.Text)); }
if (string.IsNullOrEmpty(etxtweightedValue.Text))
{ cmd.Parameters.Add(new SqlParameter("@weightedValue", DBNull.Value)); }
else
{ cmd.Parameters.Add(new SqlParameter("@weightedValue", etxtweightedValue.Text)); }
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script language=javascript>alert('" + etxtQno.Text + "'+' Details Updated successfully!');</script>");
GridView1.EditIndex = -1;
userSales();
}
protected void OnPageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
userSales();
}
}
}