如果数据网格包含现有数据，如何在datagrid中添加新行 [英] How can i add a new row in datagrid if the data grid contains existing data
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问题描述
我编写了一个代码，用于将文本框中的值输入到数据网格中，然后将数据网格的内容保存到数据库中
但是，如果我想从数据库中检索值，如果我想将一些新记录添加到gridview抛出文本框中，则不会happinig
如果我单击addbutton，它将在gridview的第一个位置(行索引)插入行.
我希望将其插入到网格视图的最后一个位置(如果存在3条记录，则应将其插入到网格视图的4个位置)
请帮我...
谢谢
Hi,
I have make a code for entering the values from textbox to data grid and then saving the content of data grid to database
but when i retrive the values from database if i want to add some new record into the gridview throw text box it does not happinig
if i click on addbutton , it insert the row at first position(rowindex) of gridview.
i want it to be insert at the last position of grid view (if there are 3 records present then it should be inserted on 4 position of gridview)
pls help me ...
Thanks
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
enabletrue();
//Mode Check weather to add or edit the record.
lblmode.Text = Request.QueryString["mode"];
setdefaultgrid();
if (lblmode.Text == "add")
{
this.txtcustomerno.Focus();
this.btnupdate.Enabled = false;
}
else// if (lblmode.Text == "edit")
{
setvalue();
setgridvalue();
this.txtcustomerno.Enabled = false;
this.txtcustomername.Focus();
this.btnsave.Enabled = false;
}
}
}
private void AddNewRow()
{
setgridvalue();
int rowIndex = GVCustomerRate.Rows.Count;
if (ViewState["Table"] != null)
{
DataTable dtTable = (DataTable)ViewState["Table"];
DataRow drCurrentRow = null;
//GVCustomerRate.DataSource = dtTable;
//GVCustomerRate.DataBind();
int tablerow = dtTable.Rows.Count;
if (GVCustomerRate.Rows.Count >= 0)
{
for (int i = 0 ; i <= tablerow; i++)
{
drCurrentRow = dtTable.NewRow();
drCurrentRow["Service No"] = txtserviceno.Text;
drCurrentRow["No of Axel"] = txtnoofaxel.Text;
drCurrentRow["Rate"] = txtrate.Text;
rowIndex++;
}
//add new row to DataTable
dtTable.Rows.Add(drCurrentRow);
//Store the current data to ViewState
ViewState["Table"] = dtTable;
//Rebind the Grid with the current data
GVCustomerRate.DataSource = dtTable;
GVCustomerRate.DataBind();
}
}
else
{
Response.Write("ViewState is null");
}
}
protected void setdefaultgrid()
{
DataTable dt = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("Service No", typeof(string)));
dt.Columns.Add(new DataColumn("No of Axel", typeof(string)));
dt.Columns.Add(new DataColumn("Rate", typeof(string)));
dr = dt.NewRow();
dt.Rows.Add(dr);
ViewState["Table"] = dt;
GVCustomerRate.DataSource = dt;
GVCustomerRate.DataBind();
dr.Delete();
}
protected void setgridvalue()
{
str = Request.QueryString["TrnNo"];
cn.ConnectionString = constring;
cn.Open();
cmd.Connection = cn;
cmd.CommandText = "Select ServiceNo,NoOfAxel,Rate from rate_master Where CustomerTrnId = ''" + Convert.ToInt32(str) + "''";
da = new MySqlDataAdapter();
da.SelectCommand = cmd;
da.Fill(ds);
GVCustomerRate.DataSource = ds.Tables[0];
GVCustomerRate.DataBind();
cn.Close();
}
protected void saveratedetails()
{
cn.ConnectionString = constring;
foreach (GridViewRow gvr in GVCustomerRate.Rows)
{
cn.Open();
cmd.Connection = cn;
cmd = new MySqlCommand("Insert_Rate_Master", cn);
cmd.CommandType = CommandType.StoredProcedure;
MySqlParameter par19 = new MySqlParameter();
par19 = cmd.Parameters.Add("ServiceNo", MySqlDbType.VarChar);
par19.Direction = ParameterDirection.Input;
par19.Value = gvr.Cells[1].Text;
MySqlParameter par13 = new MySqlParameter();
par13 = cmd.Parameters.Add("NoOfAxel", MySqlDbType.Int32);
par13.Direction = ParameterDirection.Input;
par13.Value = Convert.ToInt32(gvr.Cells[2].Text );
MySqlParameter par14 = new MySqlParameter();
par14 = cmd.Parameters.Add("Rate", MySqlDbType.Double);
par14.Direction = ParameterDirection.Input;
par14.Value = Convert.ToDouble(gvr.Cells[3].Text);
MySqlParameter par15 = new MySqlParameter();
par15 = cmd.Parameters.Add("UpFlag", MySqlDbType.VarChar);
par15.Direction = ParameterDirection.Input;
par15.Value = "SAVE";
MySqlParameter par16 = new MySqlParameter();
par16 = cmd.Parameters.Add("Biid", MySqlDbType.Int32);
par16.Direction = ParameterDirection.Input;
par16.Value = 1;
MySqlParameter par17 = new MySqlParameter();
par17 = cmd.Parameters.Add("LogInTime", MySqlDbType.DateTime);
par17.Direction = ParameterDirection.Input;
par17.Value = System.DateTime.Now;
MySqlParameter par18 = new MySqlParameter();
par18 = cmd.Parameters.Add("CustomerTrnId", MySqlDbType.Int32);
par18.Direction = ParameterDirection.Input;
par18.Value = trnno;
int x = cmd.ExecuteNonQuery();
cmd.Connection.Close();
cn.Close();
}
}
推荐答案
检查本教程，有一个向网格视图动态添加新行的示例.希望对您有所帮助
http://csharpings.blogspot.com/2010/02/dinamically- add-rows-in-gridview-from.html
Check this tutorial, there is an example of adding new row dynamically to grid view..I hope it''ll help you
http://csharpings.blogspot.com/2010/02/dinamically-add-rows-in-gridview-from.html
您看过这篇文章吗?
可编辑的嵌套数据网格 [
Had you looked at this article?
Editable Nested DataGrid[^]
If you download the source code and have a look, you will get everything you need.
亲爱的sandeep
试试这个链接，我相信它将帮助您动态地在网格视图中添加新行.
http://codeasp.net/articles/asp.net/67/adding-dynamic-rows-in-gridview-with-textboxes [
dear sandeep
try this link it i am sure it will help you to add new row in grid view dynamically..
http://codeasp.net/articles/asp.net/67/adding-dynamic-rows-in-gridview-with-textboxes[^]
if you get your answer then please rating me
thanks
DX-ARMY
[Corrected link formatting]
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