Develop Reference

bind asp.net gridview column form textbox value dynamically

I want to bind gridview column from textbox value for example: I have two textbox and a button what i exactly want that i will give input in the two textboxes and when i clicked the button the textbox values will show in gridviw and want to do this for multiple times without replacing the previous values.
I found so many relevant answer but all are done with hard code inside button click event
protected void Button1_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[2] { new DataColumn("Name",
typeof(string)),
new DataColumn("Age", typeof(decimal)) });
dt.Rows.Add(TextBox1.Text, TextBox2.Text);
GridView1.DataSource = dt;
GridView1.DataBind()
}
which replace the previous values when i insert new values, but i want to keep all the previous values in which I stuck .thanks

this code will help you to get current data from gridview to datatable
and then you can append new rows accordingly .
protected void Button1_Click(object sender, EventArgs e)
{
DataTable dt =GetGridData();
dr = dt.NewRow();
dt.Rows.Add(TextBox1.Text, TextBox2.Text);
GridView1.DataSource = dt;
GridView1.DataBind();
}
private DataTable GetGridData ()
{
DataTable _datatable = new DataTable();
for (int i = 0; i < grdReport.Columns.Count; i++)
{
_datatable.Columns.Add(grdReport.Columns[i].ToString());
}
foreach (GridViewRow row in grdReport.Rows)
{
DataRow dr = _datatable.NewRow();
for (int j = 0; j < grdReport.Columns.Count; j++)
{
if (!row.Cells[j].Text.Equals(" "))
dr[grdReport.Columns[j].ToString()] = row.Cells[j].Text;
}
_datatable.Rows.Add(dr);
}
return _dataTable;
}

You can store the values from each PostBack into a Session or ViewState, otherwise you'll lose all the data when the button is clicked again.
protected void Button1_Click(object sender, EventArgs e)
{
DataTable dt;
//check if the datatable already exists in the viewstate, if not create a new datatable
if (ViewState["myTable"] == null)
{
dt = new DataTable();
dt.Columns.AddRange(new DataColumn[2] { new DataColumn("Name", typeof(string)), new DataColumn("Age", typeof(decimal)) });
}
else
{
//correct viewstate exists, cast back to a datatable
dt = ViewState["myTable"] as DataTable;
}
//add the new values
dt.Rows.Add(TextBox1.Text, Convert.ToDecimal(TextBox2.Text));
//bind the datatable to the gridview
GridView1.DataSource = dt;
GridView1.DataBind();
//save the datatable into the viewstate
ViewState["myTable"] = dt;
//clear the textboxes
TextBox1.Text = "";
TextBox2.Text = "";
}

Losing data and gridview C#

I have a program by VC2008 that send dataTable I sended it using the constractor I solve it help at losing data entered in dataview C# - to datagridview in another Form it work fine but I want to send only the new row I tried to copy using ImportRrow it to another datatable but it gives Form2 Blank.
and I send the data as datatable by method as following:
public DataTable showout2()
{
DataTable dtab = new DataTable();
DataColumn dc1 = new DataColumn("رقم المتسلسل");
DataColumn dc2 = new DataColumn("رقم الحساب");
DataColumn dc3 = new DataColumn("أسم الحساب");
DataColumn dc4 = new DataColumn("المالك");
DataColumn dc5 = new DataColumn("قيمة");
DataColumn dc6 = new DataColumn("نوع العملة");
DataColumn dc7 = new DataColumn("الدائن");
DataColumn dc8= new DataColumn("المدين");
DataColumn dc9= new DataColumn("تاريخ");
DataColumn dc10 = new DataColumn("تفاصيل");
dtab.Columns.Add(dc1);
dtab.Columns.Add(dc2);
dtab.Columns.Add(dc3);
dtab.Columns.Add(dc4);
dtab.Columns.Add(dc5);
dtab.Columns.Add(dc6);
dtab.Columns.Add(dc7);
dtab.Columns.Add(dc8);
dtab.Columns.Add(dc9);
dtab.Columns.Add(dc10);
DateTime date = new DateTime();
date = DateTime.Now;
// Create an array for the values.
object[] newRow = new object[10];
Set the values of the array.
string s = numb.Text;
newRow[0] = numb.Text;
newRow[1] = Account_numb.Text;
newRow[2] = Account_nam.Text;
newRow[3] = owner.Text;
newRow[4] = curency.Text;
newRow[5] = comboBox1.Text;
newRow[6] = Depet.Text;
newRow[7] = cridet.Text;
newRow[8] = date.ToString();
newRow[9] = note.Text;
declare DataRow and adding it to DataTable
DataRow row;
dtab.BeginLoadData();
// Add the new row to the rows collection.
row = dtab.LoadDataRow(newRow, true);
return dtab;
}
I transfer the data from Form as following
cashagree fm = cashagree(shouwout2());
I copy the datarow in constractor take datatable as prameter as following:
public Cashagree(DataTable d2)
{
dt.ImportRow(d2.Rows[0]);
}
here I assign the datasource and mange the secound datagridview
private void Cashagree_Load_1(object sender, EventArgs e)
{
try
{
for (int i = 0; i != dt.Rows.Count; i++){
label1.Text= dt.Rows[i].ToString();
if (string.IsNullOrEmpty(dt.Rows[i].ToString()))
{
MessageBox.Show("This is empty");
}
}
dataGridView.DataSource = dt;
dataGridView.Columns[3].Visible = false;
dataGridView.Columns[4].Visible = false;
dataGridView.Columns[5].Visible = false;
dataGridView.Columns[6].Visible = false;
dataGridView.Columns[7].Visible = false;
}
catch (Exception w) { MessageBox.Show("Error" + w.StackTrace); }
}
thank you for helping

How to Pass data table from DataGridView to ReportViewer

How to Pass data table from DataGridView ro ReportViewer ?
in a win Form I have a DataGridView control that fills from a SqlDataAdapter , and I added a check box column to it. for "ready to print"(or smt like this)
now I want to create a report with ReportViewr to show only checked rows in my DataGridView.
here is codes of my form1 (Contains datagridview)
private void Fill_DGV_Sefaresh()
{
try
{
MyDB db = new MyDB();//class that contains my SQL Connection
string sql = "SELECT sid, CONVERT(VARCHAR(10), cast(sdate as date), 111)sdate, sdes, sfor, suname, isdone, sqty FROM sefaresh order by sid desc";
SqlDataAdapter sda = new SqlDataAdapter(sql,db.MyConn);
DataSet ds = new DataSet();
BindingSource bs = new BindingSource();
sda.Fill(ds);
bs.DataSource = ds.Tables[0].DefaultView;
bindingNavigator1.BindingSource = bs;
dataGridView1.DataSource = bs;
}
catch { }
}
codes of my form2 (contains ReportViewer Control)
private SqlDataAdapter idata()
{
MyDB db = new MyDB();
string sql = "SELECT * FROM sefaresh";
SqlDataAdapter sda = new SqlDataAdapter(sql, db.MyConn);
return sda;
}
private void SefareshView_Load(object sender, EventArgs e)
{
idata().Fill(this.DS_Sefaresh.sefaresh);//DS_Sefaresh is a dataset item , sefaresh is a Table adapter
this.reportViewer1.RefreshReport();
}

Try something like the following,
ReportDataSource Rds = new ReportDataSource(dataSetName, bs);
reportViewer1.LocalReport.DataSources.Add(Rds);
Where bs is your BindingSource, dataSetName is the name of the dataset in the report, Rds is the datasource for the ReportViewer, and reportViewer1 is the ReportViewerControl.
If you for some reason need to take the data directly from the DataGridView just replace bs with dataGridView1.DataSource.

Segue
private void tbcaixas_Leave(object sender, EventArgs e)
{
Carga();
int caixas = Convert.ToInt32(tbcaixas.Text);
List<int> lista = new List<int>();
for (int i = 1; i <= caixas; i++)
{
DataRow linha = dt.NewRow();
linha["ncaixa"] = "1/" + i;
linha["loja"] = tbLoja.Text.ToUpper();
dt.Rows.Add(linha);
}
}
private void Carga()
{
dt = new DataTable();
dt.Columns.Add("ncaixa", typeof(string));
dt.Columns.Add("artigo", typeof(string));
dt.Columns.Add("tam", typeof(string));
dt.Columns.Add("cor", typeof(string));
dt.Columns.Add("arte", typeof(string));
dt.Columns.Add("qtd", typeof(string));
dt.Columns.Add("und", typeof(string));
dt.Columns.Add("loja", typeof(string));
dgvDados.DataSource = dt;
}
private void btnImprimir_Click(object sender, EventArgs e)
{
DataTable dtImpressao = ((DataTable)dgvDados.DataSource);
var parametro1 = new ReportParameter("data", dtpData.Text);
var parametro2 = new ReportParameter("cliente", tbCliente.Text);
var parametro3 = new ReportParameter("notafiscal", tbNotaFiscal.Text);
var parametro4 = new ReportParameter("pesobruto", tbPesoBruto.Text);
var parametro5 = new ReportParameter("pesoliquidado", tbPesoLiquidado.Text);
var parametro6 = new ReportParameter("pesoliquidado", cbEmpresa.SelectedItem.ToString());
ReportParameter[] paremetros = new ReportParameter[] { parametro1, parametro2, parametro3, parametro4, parametro5 };
ImpressaoHelper.Imprimir(null, "DataSetRelatorios", "br.com.bonor.Core.relatorios.pcp.Romaneio.rdlc", dtImpressao);
}
}
}

how to bind datatable to datagridview in c#

I need to bind my DataTable to my DataGridView.
i do this:
DTable = new DataTable();
SBind = new BindingSource();
//ServersTable - DataGridView
for (int i = 0; i < ServersTable.ColumnCount; ++i)
{
DTable.Columns.Add(new DataColumn(ServersTable.Columns[i].Name));
}
for (int i = 0; i < Apps.Count; ++i)
{
DataRow r = DTable.NewRow();
r.BeginEdit();
foreach (DataColumn c in DTable.Columns)
{
r[c.ColumnName] = //writing values
}
r.EndEdit();
DTable.Rows.Add(r);
}
SBind.DataSource = DTable;
ServersTable.DataSource = SBind;
But all i got is DataTable ADDS NEW columns to my DataGridView.
I don't need this, i just need to write under existing columns.

Try this:
ServersTable.Columns.Clear();
ServersTable.DataSource = SBind;
If you don't want to clear all the existing columns, you have to set DataPropertyName for each existing column like this:
for (int i = 0; i < ServersTable.ColumnCount; ++i) {
DTable.Columns.Add(new DataColumn(ServersTable.Columns[i].Name));
ServersTable.Columns[i].DataPropertyName = ServersTable.Columns[i].Name;
}

Even better:
DataTable DTable = new DataTable();
BindingSource SBind = new BindingSource();
SBind.DataSource = DTable;
DataGridView ServersTable = new DataGridView();
ServersTable.AutoGenerateColumns = false;
ServersTable.DataSource = DTable;
ServersTable.DataSource = SBind;
ServersTable.Refresh();
You're telling the bindable source that it's bound to the DataTable, in-turn you need to tell your DataGridView not to auto-generate columns, so it will only pull the data in for the columns you've manually input into the control... lastly refresh the control to update the databind.

On the DataGridView, set the DataPropertyName of the columns to your column names of your DataTable.

// I built my datatable first, and populated it, columns, rows and all.
//Then, once the datatable is functional, do the following to bind it to the DGV. NOTE: the DGV's AutoGenerateColumns property must be 'true' for this example, or the "assigning" of column names from datatable to dgv will not work. I also "added" my datatable to a dataset previously, but I don't think that is necessary.
BindingSource SBind = new BindingSource();
SBind.DataSource = dtSourceData;
ADGView1.AutoGenerateColumns = true; //must be "true" here
ADGView1.Columns.Clear();
ADGView1.DataSource = SBind;
//set DGV's column names and headings from the Datatable properties
for (int i = 0; i < ADGView1.Columns.Count; i++)
{
ADGView1.Columns[i].DataPropertyName = dtSourceData.Columns[i].ColumnName;
ADGView1.Columns[i].HeaderText = dtSourceData.Columns[i].Caption;
}
ADGView1.Enabled = true;
ADGView1.Refresh();

foreach (DictionaryEntry entry in Hashtable)
{
datagridviewTZ.Rows.Add(entry.Key.ToString(), entry.Value.ToString());
}

private void Form1_Load(object sender, EventArgs e)
{
DataTable StudentDataTable = new DataTable("Student");
//perform this on the Load Event of the form
private void AddColumns()
{
StudentDataTable.Columns.Add("First_Int_Column", typeof(int));
StudentDataTable.Columns.Add("Second_String_Column", typeof(String));
this.dataGridViewDisplay.DataSource = StudentDataTable;
}
}
//Save_Button_Event to save the form field to the table which is then bind to the TableGridView
private void SaveForm()
{
StudentDataTable.Rows.Add(new object[] { textBoxFirst.Text, textBoxSecond.Text});
dataGridViewDisplay.DataSource = StudentDataTable;
}

for example we want to set a DataTable 'Users' to DataGridView by followig 2 steps :
step 1 - get all Users by :
public DataTable getAllUsers()
{
OracleConnection Connection = new OracleConnection(stringConnection);
Connection.ConnectionString = stringConnection;
Connection.Open();
DataSet dataSet = new DataSet();
OracleCommand cmd = new OracleCommand("semect * from Users");
cmd.CommandType = CommandType.Text;
cmd.Connection = Connection;
using (OracleDataAdapter dataAdapter = new OracleDataAdapter())
{
dataAdapter.SelectCommand = cmd;
dataAdapter.Fill(dataSet);
}
return dataSet.Tables[0];
}
step 2- set the return result to DataGridView :
public void setTableToDgv(DataGridView DGV, DataTable table)
{
DGV.DataSource = table;
}
using example:
setTableToDgv(dgv_client,getAllUsers());

How to write every time to a new row of data table?

How can i insert each time a diffrent row in datatable?
The data table is used in a dataGridView to write a log. I need each time to write in a diffrent line (row) in the datatable, when I can't know how many rows I need in runtime.
Another thing; the datatable is loaded from a XML file, so there might be already rows in the data table.
What can i do? (in short, I always write in the same row) in C#
EDIT:
here is the code:
From some reason, the DateGridView isonly having one row(This is a method that activated in a click of a button)
public void gridStart(string i, string b, string c)
{
DataTable dt = new DataTable();//empty table with no schema
DataColumn colContactID = new DataColumn("Date", typeof(string));
DataColumn colContactName = new DataColumn("Caller", typeof(string));
DataColumn colResult = new DataColumn("Result", typeof(string));
dt.Columns.Add(colContactID);
dt.Columns.Add(colContactName);
dt.Columns.Add(colResult);
DataRow row = dt.NewRow();
row["Date"] = i;
row["Caller"] = b;
row["Result"] = c;
dt.Rows.Add(row);
}

You should be able to Use DataTable.NewRow(). There are several samples on that MSDN page. If you have more questions please provide some sample code to your answer.
private void Form1_Load(object sender, EventArgs e)
{
dataGridView1.DataSource = MyDataTable;
}
private string _fileName = "MyCache.xml";
private DataTable _myDataTable;
public DataTable MyDataTable
{
get
{
if (_myDataTable == null)
{
_myDataTable = new DataTable();
if (File.Exists(_fileName))
_myDataTable.ReadXml(_fileName);
else
InitDataTable(_myDataTable);
}
return _myDataTable;
}
}
private void InitDataTable(DataTable table)
{
table.TableName = "MyTable";
table.Columns.Add("Date", typeof(DateTime));
table.Columns.Add("Caller", typeof(string));
table.Columns.Add("Result", typeof(string));
}
// Have your add code call this method!
private void AddValue(DateTime date, string caller, string result)
{
var row = MyDataTable.NewRow();
row["Date"] = date;
row["Caller"] = caller;
row["Result"] = result;
MyDataTable.Rows.Add(row);
}
protected override void OnClosed(EventArgs e)
{
if (_myDataTable != null)
_myDataTable.WriteXml(_fileName, XmlWriteMode.WriteSchema);
base.OnClosed(e);
}

If it is bound to a data source, you need to first get the data source,
// Assuming it's a DataTable
DataTable dt = ((DataTable)myDataGridView.DataSource);
insert rows to your data source (like what your method is doing in your post), then tell the view to refresh its contents.
So maybe something like this would work:
public void gridStart()
{
DataTable dt = new DataTable();
DataColumn colContactID = new DataColumn("Date", typeof(string));
DataColumn colContactName = new DataColumn("Caller", typeof(string));
DataColumn colResult = new DataColumn("Result", typeof(string));
dt.Columns.Add(colContactID);
dt.Columns.Add(colContactName);
dt.Columns.Add(colResult);
dataGridView1.DataSource = dt;
// Call method to insert values.
}
to start up the grid, and:
public void gridInsert(string i, string b, string c)
{
DataTable dt = (DataTable)myDataGridView.DataSource;
DataRow row = dt.NewRow();
row["Date"] = i;
row["Caller"] = b;
row["Result"] = c;
dt.Rows.Add(row);
// Call another method to refresh grid view.
}
to call when you want to insert data to your DataTable.

My solution:
public partial class _Default : System.Web.UI.Page
{
DataTable tb = new DataTable();
}
protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
DataTable dt = new DataTable("table");
dt.Columns.Add(new DataColumn("NR", Type.GetType("System.Int32")));
dt.Columns.Add(new DataColumn("Dihname", Type.GetType("System.String")));
dt.Columns.Add(new DataColumn("ing", Type.GetType("System.String")));
dt.Columns.Add(new DataColumn("Cost", Type.GetType("System.String")));
Session["ss"] = dt;
}
protected void LinkButton1_Click(object sender, EventArgs e)
{
tb = (DataTable)Session["ss"];
DataRow r1 = tb.NewRow();
r1[0] = ViewState["dishid"].ToString();
r1[1] = ViewState["dishname"];
r1[3] = Label3.Text;
tb.Rows.Add(r1);
DataList5.DataSource = tb;
DataList5.DataBind();
}
}