C# :: DataGridView CheckBox Column
Apr 24, 2014
I cannot check the checkbox in my datagridview.
Here is my code.
First, I added a checkbox column.
private void addCheckBoxColumn() {
DataGridViewCheckBoxColumn checkColumn = new DataGridViewCheckBoxColumn();
checkColumn.Name = "clmCheck";
checkColumn.HeaderText = "";
checkColumn.Width = 100;
checkColumn.ReadOnly = false;
dgv1.Columns.Add(checkC
[Code] ....
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May 3, 2014
Ok so I'm working with a windows form in C# and sql server database. I'm trying to do something like what is in the image below using a datagridview. My question is how do I 1) ensure only 1 checkbox is checked per row 2) do math that 'links' a checkbox column with another column, and add the totals. I understand that asp.net and web forms would be easier but we have not reached that point in the course yet. Would this be on the right track:
foreach (DataGridViewRow row in dataGridView.Rows)
{
if ((bool)(row.Cells["Checkbox"]).Value || (CheckState)row.Cells["Checkbox"].Value == CheckState.Checked)
{
// Do something
}
}
Attached image(s)
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Apr 18, 2014
I need to take a single column and all the rows in the column from a datagridview to a listbox using a for loop. My code is giving me no errors just not showing any data in the listbox.
private void frmProject6_Load(object sender, EventArgs e) {
// TODO: This line of code loads data into the 'enrollmentsDataSet.Enrollments' table. You can move, or remove it, as needed.
this.enrollmentsTableAdapter.Fill(this.enrollmentsDataSet.Enrollments);
[Code] .....
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Aug 28, 2014
I have looked into this and I've also read that I should be able to Config Each column Accordingly.
I'm Currently using this piece of code:
//Change the Headers on the DataGridView2//
dataGridView2.Columns["cashQTY"].HeaderText = "QTY";
dataGridView2.Columns["cashDescription"].HeaderText = "DESCRIPTION";
dataGridView2.Columns["cashSupplier"].HeaderText = "SUPPLIER";
[Code] ....
Currently it does not error, but it also does not Show the DateTime in the GridView when running either..
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May 22, 2014
I have a datagridview with many columns. I want a context menu to show up when user right-clicks on the fifth column (column index = 4).
private void dgv_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e) {
if (e.Button == MouseButtons.Right) {
DataGridView.HitTestInfo hit = dgv.HitTest(e.X, e.Y);
if (hit.ColumnIndex == 4) {
contextMenuStrip1.Show(Cursor.Position);
}
}
}
The problem is, the hit.ColumnIndex value is either 0, -1 or 1, no matter where I click. So the condition never met and the context menu never shows up. Why the values 0, -1 or 1?
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Sep 14, 2014
I'm using winforms and I want to set a checkbox on a dropdown menu item, but I don't know how to access the dropdown menu items.
I know ToolStripMenuItem items are attached to ContextMenuStrip items but I'm not sure how to navigate into the ToolStripMenuItem section to read/set those menu items.
ToolStripMenuItem listbox_font_size;
cmsListBox = new ContextMenuStrip();
cmsListBox.Items.Clear();
[Code].....
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Mar 16, 2014
Im trying to Uncheck a Checkbox control with following code.
Code:
else if((point.x >= (rcRememPass.left - 4) && point.x <= rcRememPass.right) && (point.y >= rcRememPass.top && point.y <= rcRememPass.bottom))
{
if(m_CheckBoxRemem.GetState() == BST_CHECKED)
m_CheckBoxRemem.SetCheck(0);
else
m_CheckBoxRemem.SetCheck(1);
}
Above code snippet is from OnLButtonUp(). Whereas else part working good why the if part is failing to uncheck the box ?.
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Oct 17, 2013
I'm trying to find a way to call a variable checkbox.
i.e.
for (i = 10; i < 20; i++) {
Checkbox[i]->Caption = Some Database Information
};
Note: Checkboxes are all called Checkbox10 ~ Checkbox19
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Feb 17, 2013
I want to send messege to click select check box. I can click button but I don't know how to select check box with VC.
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Apr 21, 2014
I know how to make the invisible Form, but the things that I put on the Form becomes invisible while debugging...
I need to get invisible form with visible button / radioButton / Checkbox in the middle of the screen...
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Jan 20, 2015
I am working on a paint program (already quite well developed) and I have a 'Resize' option in my Menu. When pressed it activates a custom dialog for resizing the image with 2 numeric up/downs to adjust width and height. It all works perfectly. But I want to include an 'Aspect Lock' checkBox like a professional program would have. It should immediately change both values as you adjust either one.
Here's where I am totally stumped! Of course I have tried and tried various codes, but nothing works properly. My values jump erratically or won't change at all. I wonder if trying to change the value of one numeric up/down while inside the code block for changing the value of the other one has got them screwing with each other somehow. Any example code that could accomplish what I'm trying to do?
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Jun 11, 2014
How would I delete a row in a datagridview (and in the database) if the datagridview control does not show the primary key? ie the SELECT statement we used to load the DataGridView does not include the primary key column (since it is not relevant to the user)
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Feb 25, 2014
I am running a windows forms project. on the form there is a datagridview, a progress bar, a textbox and two 2 buttons.
The two buttons are used to navigate through the records(one for next record and the other for previous record) the textbox displays the record that is being currently viewed.
How can I link the progress with the database or in this case the datagridview and when the next button is pressed it increments and when the previous button is clicked it decrements and also the progress to be fully filled when the last record is reached ?
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Jul 16, 2014
How you can touch a datagridview and it would insert the name it has for a product into a label or textbox.... As I have looked all over and I can't really find a proper way it is mentioned or maybe I am not applying it correctly.
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May 27, 2013
I am using C# to build up a application. Otherwise, i have two forms, the first form is frmMaterial and the second form is frmMaterialList. frmMaterial has a textbox to get value from datagridview of frmMaterialList. My code doesn't work. How to get value from datagridview of frmMaterialList into textbox of frmMaterial?
Note: frmMaterial has a button to load frmMaterialList
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Sep 13, 2014
I have two table the first is called Imprrests and the second is called ]IprestsPays. There is an Imprest_ID column that is primary key in [icode]Imprests[/code] table and foreign key in ImprestsPays table
Imprests table consists the following columns:
Imprest_ID, Impres_value, Imprest_date, Employee_ID
Where Employee_ID column is primary key in Employees table and foreign key in Imprests table.
ImprestsPays table consists the following columns:
ID, Payment_value, Payment_date, Imprest_ID
My problem is in the buttonadd_click event in Imprsts form.
I want to prevent user from insert any new imprest for employee in Imprests table if employee haven't paid all payments in ImprestsPays table for old imprest...
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Feb 16, 2014
In Form1 I have a Datagridview showing the content of a table from DataBase.
In Form2 I add or modify a row in that table. So, when I get back to Form1 I would want the DataGridView get updated automatically.
To populate the DGV I use a Linq To Sql query:
Code:
Query = From ..... ;
Me.DGV.DataSource = Query;
or
Code:
Query = From ..... ;
Me.BindingSource1.DataSource = Query ;
Me.DGV.DataSource = Me.BindingSource1 ;
I have been trying to use:
BindSource (as DataGridView.DataSource)
BindingSource.ResetBinding(False)
DGV.Refresh()
etc...
Also, I added a new row in the same Fomr1 and nothing happens.
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Apr 2, 2015
I am currently writing a program which needs an edit form. This form is to edit a country in the datagridview which I have. I am however confused about how to pass the data from the data gridview in the main form to the relative places on the edit form. I have done most of the coding as shown below. I know I need a method in my AVL class to return all the information of the selected country back to the main form method which then passes it back to the edit form and displays it. I am unsure what to pass and what to write in this method.
Main form method
public void button2_Click(object sender, EventArgs e)
{
// creates new form referencing data grid view and AVL Tree
EditCountryForm editform = new EditCountryForm(ref this.countryTree, dataGridView1);
string CountryName = "";
//set name of country selected to string
[Code]...
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Jul 11, 2014
i have a gataGidView that already has colomns inside, i want to know how i could possibly load data from a text file into it and then save data once the form is closing, im also having trouble with the separators ( winForm visual S...)
Ive already tried planning it but my way doesn't seem to work, heres my logic :
file load
if (file exists)
{
read file/load data
}
[Code]....
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Mar 24, 2014
I have the following code. I am able to call data from my database and print the result onto datagridview. However, if I happen to edit some data through datagridview, I would like it to save the changes by clicking a save button. I do not know how to connect callDBButton_Click and saveButton_Click...I know how to update the changes if I just put adapter.Update(dataTable); at the end of the callDBButton_Click method...but I want to it only save changes when I CLICK the "Save" Button.
private void callDBButton_Click(object sender, EventArgs e) {
string stockName;
stockName = stockNameTextBox.Text;
OleDbConnection Connect = new OleDbConnection(OleDbConnectionString);
[Code] .....
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Jul 13, 2014
i tried to dave my datagridview to a binary file it worked at first and then when i tried it again it said file is being used by another process.
this is the code that loads the binary file
:
public void loadingparty()
{
string file = Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\mygrid.bin";
if (File.Exists(file))
[Code].....
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Jul 1, 2014
I have a button click that is adding user input into a datagrid view. I am trying to add the information into a row, but the way I am trying is giving me an error. Is there a better way to do this?
private void submitButton_Click(object sender, EventArgs e)
{
Data_Summary form2 = new Data_Summary();
Data_Summary.Rows.Add(firstNameTxtBox.Text, lastNameTxtBox.Text, phoneNumberTxtBox.Text);
form2.Show();
}
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Apr 21, 2015
In my project i need to update the attn_dateTimeOut in database.After i updated it will automatic delete the specific row record that had been updated. I had two question:
1) in my database there are a few table is assign not null."attn_dateTimeOut" is a table that haven insert any record. When i update it using below code,it work and can update but it comes out error.Error show "record cannot be null".
2) I want t make it when i updated the "attn_dateTimeOut",it will auto delete the row of updated record.I do usign back code "DeleteRecord" but it nothing change!How should i do?
Here my code:
private void txt_proximity_KeyPress(object sender, KeyPressEventArgs e) {
if (e.KeyChar == (char)13) {
TMPB_attn row_TMPN_attn = BusinessLogicLayer.TMS_GET_PROXIMITY_VALID_TO_USE(txt_proximity.Text);
if (!String.IsNullOrEmpty(txt_proximity.Text)) {
[Code] .....
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Aug 25, 2014
i'm using DataGridView and the sorting operation,by clicking the column header, is working fine , but when i add the drag and drop operation it doesn't respond . i think it can be fixed by disabling the drag and drop for the headers, but i just couldn't find a way to do that.
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Feb 14, 2015
I have a data grid view
ProductID|Name|Category|Description|quantity
1|Coat|men|black coat|5
2|Jacket|men|green jaacket|2
3|Pillow|Home|white|10
a user can edit quantity ie productID 1 has quantity 10, and ProductID 2 has quantity 3, it should update once clicked update button. however i must highlight both rows to do it so if i leave the selected cell on product id 3 it will upate only that row. is there a way to update the rows that have been changed when not highlighted.
for (int i = 0; i < dataGridView1.SelectedCells.Count; i++) {
int selectedrowindex = dataGridView1.SelectedCells[i].RowIndex;
DataGridViewRow selectedRow = dataGridView1.Rows[selectedrowindex];
string a = Convert.ToString(selectedRow.Cells["Quantity"].Value);
string b = Convert.ToString(selectedRow.Cells["ProductID"].Value);
//update to database.....
}
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Feb 26, 2014
In my form, I'm adding new records in the datagridview. However, for some reason only the first column of that datagridview is updated. Then I tried to clear out the other codes and left the code for the datagridview. Apparently, I failed. Then I tried creating a new form with the same design and code. And it works out pretty well.
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