Member Avatar for amithasija

i want to make a chekbox column in my datagrid,and wants to do some action on checked and unchecked,i am using c# in window application,can anybody help me regarding this......that how to apply these checkbox.??

thanx in advance,,

amit hasija

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  • Latest Post Latest Post by kapil.goyal

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For : since you said this is a Windows Forms app, the simplest, most robust option is to use a DataGridView with a DataGridViewCheckBoxColumn (or bind a bool DataColumn in a DataTable). pointed to an online sample and mentioned he posted a solution; the notes below focus on the common pitfalls that those examples sometimes miss and a compact, practical pattern to use now.

Add a checkbox column (bound or unbound), then handle the immediate-change issue so checking fires code as soon as the box is clicked. The two events to use are CurrentCellDirtyStateChanged (call CommitEdit) and CellValueChanged to react to the new value:

dataGridView1.Columns.Add(new DataGridViewCheckBoxColumn { Name = "Select", HeaderText = "Select" });

dataGridView1.CurrentCellDirtyStateChanged += (s,e) =>
{
    if (dataGridView1.IsCurrentCellDirty && dataGridView1.CurrentCell is DataGridViewCheckBoxCell)
        dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
};

dataGridView1.CellValueChanged += (s,e) =>
{
    if (e.RowIndex >= 0 && e.ColumnIndex == dataGridView1.Columns["Select"].Index)
    {
        bool checkedState = Convert.ToBoolean(dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value);
        // handle check/uncheck here
    }
};

Troubleshooting and tips: if you bind to a DataTable, make sure the DataColumn is type bool (or a bool property on your objects when binding a BindingList<T>). When reading values, guard against null/DBNull (use Convert.ToBoolean or bool.TryParse). To collect checked rows, iterate Rows and use Convert.ToBoolean on the checkbox cell. If you are on older .NET and using the legacy DataGrid, create a boolean DataColumn or a DataGridBoolColumn instead. If the thread contains a posted solution from , compare this event-handling pattern — it resolves the frequent issue of the checkbox value not being committed immediately.

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Member Avatar for c# seeker

hey pal,

You may have found the solution by now. If you haven't check out this link.

Member Avatar for kapil.goyal

i have already provide solution for this.just check my posts.

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