如何在gridview中添加下拉菜單並將下拉菜單與數據庫綁定？

我必須在我的網格視圖中添加一個下拉列表並與數據庫綁定。如何在gridview中添加下拉菜單並將下拉菜單與數據庫綁定？

代碼：

protected void Page_Load(object sender, EventArgs e) 
{ 
     if (!IsPostBack) 
     { 
      DataSet1TableAdapters.emplTableTableAdapter tb; 
      tb = new DataSet1TableAdapters.emplTableTableAdapter(); 
      DataTable dt = new DataTable(); 
      dt = tb.GetEmpID(); 
      DropDownList1.DataSource = dt; 
      DropDownList1.DataTextField = "empId"; 
      DropDownList1.DataValueField = "empId"; 
      DropDownList1.DataBind(); 
      DropDownList1.Items.Insert(0, new ListItem("--Select Employee ID--", "")); 
     } 
} 

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) 
{ 
     DataSet1TableAdapters.emplTableTableAdapter tb; 
     tb = new DataSet1TableAdapters.emplTableTableAdapter(); 
     DataTable dt = new DataTable(); 

     dt = tb.GetGrid(int.Parse(DropDownList1.SelectedValue)); 
     GridView1.DataSource = dt; 
     GridView1.DataBind(); 
} 

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) 
{ 
     //Set the edit index. 
     GridView1.EditIndex = e.NewEditIndex; 
     //Bind data to the GridView control. 
     BindData(); 
} 

private void BindData() 
{ 
     DataSet1TableAdapters.emplTableTableAdapter tb; 
     tb = new DataSet1TableAdapters.emplTableTableAdapter(); 
     DataTable dt = new DataTable(); 

     dt = tb.GetGrid(int.Parse(DropDownList1.SelectedValue)); 
     GridView1.DataSource = dt; 
     GridView1.DataBind(); 
}

ASPX：

<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> </asp:DropDownList> 

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" AutoGenerateEditButton="True" OnRowEditing="GridView1_RowEditing"> 

<Columns> 
<asp:BoundField DataField="empId" HeaderText="Employee ID" ReadOnly="True" SortExpression="empId" /> 
<asp:BoundField DataField="empName" HeaderText="Employee Name" ReadOnly="True" 
    SortExpression="empName" /> 
<asp:TemplateField HeaderText="Employee Designation" SortExpression="empDesig"> 
<EditItemTemplate> 
<asp:DropDownList ID="DropDownList2" runat="server"> 
</asp:DropDownList> 
</EditItemTemplate> 
<ItemTemplate> 
<asp:Label ID="Label1" runat="server" Text='<%# Bind("empDesig") %>'></asp:Label> 
</ItemTemplate> 
</asp:TemplateField> 
</Columns> 
</asp:GridView>

表：

enter image description here

現在我越來越喜歡輸出如下：

enter image description here

我需要綁定下拉與DB empDesig列。下面給出了我期望的輸出樣本設計。

enter image description here

來源

2014-11-01 Vipin

http://www.aspsnippets.com/Articles/Populate-DropDownList-with-選擇-價值在-EditItemTemplate中-的-GridView控件功能於ASPNet.aspx – Manoj 2014-11-01 12:14:15

使用此代碼

<asp:GridView ID="GridView1" runat="server"> 
     <asp:BoundField DataField="Contact_Name" HeaderText="Contact Name" /> 
     <asp:TemplateField HeaderText="City"> 
      <ItemTemplate> 
      <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> </asp:DropDownList> 
      </ItemTemplate> 
    </asp:TemplateField> 
</asp:GridView>

來源

2014-11-01 12:10:15

您可以使用EditItemTemplate中如下圖所示

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" > 
     <Columns> 
      <asp:TemplateField HeaderText="City"> 
       <EditItemTemplate> 
        <asp:DropDownList ID="DropDownList1" runat="server" DataTextField="<TextColumnNameInDataSource>" DataValueField="<ValueColumnNameInDataSource>" 
         /> 

       </EditItemTemplate> 
       <ItemTemplate> 
        <asp:Label ID="Label1" runat="server" ></asp:Label> 
       </ItemTemplate> 
      </asp:TemplateField> 
     </Columns> 
    </asp:GridView>

在正常模式下，你會看到這是在ItemTemplate中的控制，當你點擊編輯並且行處於編輯模式時，您將看到EditItemTemplate中的任何內容。同時它們都具有用於popu的DataSource，DataTextField和DataValueField屬性在下拉列表和SelectedValue屬性中顯示選定值的值。

來源

2014-11-01 12:16:55 Jags

添加DataKey和onrowupdating爲ASPX的GridView和

<asp:Gridview id = "dg1" onrowupdating="dg1_RowUpdating" DataKeyNames="ID" 

    <Columns> 
     <asp:TemplateField HeaderText="City"> 
      <EditItemTemplate> 
       <asp:DropDownList ID="ddl_City" runat="server" /> 


      </EditItemTemplate> 
      <ItemTemplate> 
       <asp:Label ID="lbcity" runat="server" ></asp:Label> 
      </ItemTemplate> 
     </asp:TemplateField> 
    </Columns> 

     </Gridview>

，然後在後面的代碼：

 protected void dg1_RowUpdating(object sender, GridViewUpdateEventArgs ee) 
    { 
     int ID = Convert.ToInt32(dg1.DataKeys[e.RowIndex].Value.ToString()); 

     TextBox contactname= (TextBox)dg1.Rows[e.RowIndex].FindControl("contact"); 
     DropDownList ddl_city= (DropDownList)dg1.Rows[e.RowIndex].FindControl("City"); 


     } 

    protected void dg1_RowDataBound(object sender, GridViewRowEventArgs e) 
     { 
      if ((e.Row.RowState & DataControlRowState.Edit) > 0) 
      { 
       } 

     }

來源

2014-11-01 12:17:34

如何在gridview中添加下拉菜單並將下拉菜單與數據庫綁定？

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