如何在从数据库中检索值时动态添加网格视图控件
本文关键字:动态 添加 网格 控件 视图 检索 数据库 | 更新日期: 2023-09-27 18:36:18
我想从数据库中检索值并将其绑定到网格视图中
根据行数,我想动态添加控件
法典:
在我的表中,我有 2 行,但使用以下代码我只能获得第 2 行值
protected void Gridview1_RowDataBound(object sender, GridViewRowEventArgs e)
{
int rowIndex = 0;
OleDbCommand cmd = new OleDbCommand("select activities,monday,tuesday,wednesday,thursday,friday,saturday,sunday from activity_values where week = '" + weekNumNow + "' and emp_id = (select emp_id from emp_master where username = '" + username + "')", DbConnection);
// DbConnection.Open();
OleDbDataReader dr1 = cmd.ExecuteReader();
while (dr1.Read())
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//find the control
DropDownList drop1 = e.Row.FindControl("dropActivities") as DropDownList;
TextBox box1 = e.Row.FindControl("TextBox1") as TextBox;
TextBox box2 = e.Row.FindControl("TextBox2") as TextBox;
TextBox box3 = e.Row.FindControl("TextBox3") as TextBox;
TextBox box4 = e.Row.FindControl("TextBox4") as TextBox;
TextBox box5 = e.Row.FindControl("TextBox5") as TextBox;
TextBox box6 = e.Row.FindControl("TextBox6") as TextBox;
TextBox box7 = e.Row.FindControl("TextBox7") as TextBox;
drop1.Text = dr1[0].ToString();
box1.Text = dr1[1].ToString();
box2.Text = dr1[2].ToString();
box3.Text = dr1[3].ToString();
box4.Text = dr1[4].ToString();
box5.Text = dr1[5].ToString();
box6.Text = dr1[6].ToString();
box7.Text = dr1[7].ToString();
}
rowIndex++;
}
}
有什么想法吗?提前致谢
我想检索值并将其绑定到数据库中的网格视图中
您可以从存储库/DAL 填充数据,并在页面加载事件中对网格视图进行数据绑定。您根本不需要使用行 DataBound 事件,因为这将为呈现的每一行打开一个数据库连接。我认为您只看到一行,因为它是数据库返回的最后一行。一些伪代码
PageLoad()
{
if(!Page.IsPostBack)
{
PopulateMyGrid();
}
}
private void PopulateMyGrid()
{
DataTable myDataTable=null;
// Your DAL code goes here (you can fill the datatable from your database)
myGrid.DataSource = myDatatable;
myGrid.DataBind();
}
您可以在网格视图中为文本框添加模板字段。对于每个文本框,您将指定 dataTable 列的名称,以便它自动获取数据绑定。
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="myTextBox" runat="sever" Text='<%#Bind("YourDataTableColumnName") %>' ></asp:TextBox>
</ItemTemplate>