有关gridview控件编辑不显示数据问题
做一个关联两张数据库表的gridview控件，绑定后编辑不能更新数据，可以查到数据库中数据变化，但是页面无显示更新的数据。下面是主要代码：public partial class sub : System.Web.UI.Page
{
SqlConnection con;
SqlCommand com;
string strCon = "Data source =localhost;Initial Catalog =adong;User ID=sa;Password=123456";
public static string PK1;
public static string SID;
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
bind();
bind1(SID);
}
}
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType != DataControlRowType.DataRow) return;
if (e.Row.FindControl("Button1") != null)
{
Button CtlButton = (Button)e.Row.FindControl("Button1");
CtlButton.Click += new EventHandler(CtlButton_Click);
}
}
protected void GridView2_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
this.GridView2.PageIndex = e.NewPageIndex;
bind1(SID);
}
protected void GridView2_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
this.GridView2.EditIndex = -1;
bind1(SID);
}
protected void GridView2_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string sqlstr = "delete from component where id='" + GridView2.DataKeys[e.RowIndex].Value.ToString() + "'";
con = new SqlConnection(strCon);
com = new SqlCommand(sqlstr, con);
con.Open();
com.ExecuteNonQuery();
con.Close();
bind1(SID);
}
protected void GridView2_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView2.EditIndex = e.NewEditIndex;
bind1(SID);
}
protected void GridView2_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
con = new SqlConnection(strCon);
string sqlstr = "update subcomponent set Pronum ='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',SubProNum='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "',Name='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[4].Controls[0])).Text.ToString().Trim() + "',Path='"
+ ((TextBox)(GridView2.Rows[e.RowIndex].Cells[5].Controls[0])).Text.ToString().Trim() + "',' where id='"
+ GridView2.DataKeys[e.RowIndex].Value.ToString() + "'";
// string sql1 = "update jobse set jobno='" + tb.Text.ToString() + "' where id='" + dkvalue + "'";
com = new SqlCommand(sqlstr, con);
con.Open();
com.ExecuteNonQuery();
con.Close();
// GridView2.EditIndex = -1;
this.GridView2.EditIndex = -1;
bind1(SID);
}
protected void CtlButton_Click(object sender, EventArgs e)
{
Button button = (Button)sender;
GridViewRow gvr = (GridViewRow)button.Parent.Parent;
string PK1 = GridView1.DataKeys[gvr.RowIndex].Value.ToString();
SID = PK1;
bind1(SID);
}
//绑定
public void bind()
{
string sqlstr = "select * from component";
con = new SqlConnection(strCon);
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, con);
DataSet myds = new DataSet();
con.Open();
myda.Fill(myds, "component");
GridView1.DataSource = myds;
GridView1.DataKeyNames = new string[] { "ProNum" };//主键
GridView1.DataBind();
GridView1.HeaderRow.Cells[1].Text = "序号";
GridView1.HeaderRow.Cells[2].Text = "资源名";
GridView1.HeaderRow.Cells[3].Text = "产品编号";
con.Close();
}
public void bind1(string str)
{
string sqlstr = "SELECT ID,ProNum,SubProNum,Name,Path FROM subcomponent where ProNum = '"+ str +"'";
con = new SqlConnection(strCon);
SqlDataAdapter myda = new SqlDataAdapter(sqlstr, con);
DataSet myds = new DataSet();
con.Open();
myda.Fill(myds, "subcomponent");
GridView2.DataSource = myds;
GridView2.DataKeyNames = new string[] { "ID" };//主键
GridView2.DataBind();
GridView2.HeaderRow.Cells[1].Text = "序号";
GridView2.HeaderRow.Cells[2].Text = "产品总类";
GridView2.HeaderRow.Cells[3].Text = "产品编号";
GridView2.HeaderRow.Cells[4].Text = "产品名称";
con.Close();
}
}
因为band1是两张表关联后形成的，所以在页面载入的时候，band1还没有形成，因此会有问题。所以问题是我不清楚在哪个位置加入绑定gridview2，也就是band1. --------------------编程问答-------------------- 可以查到数据库中数据变化，但是页面无显示更新的数据。
既然数据库的数据已经update了，页面没显示更新的数据，那你就刷新一下页面撒。
补充：.NET技术 , 组件/控件开发
